CAS Catalogue of Diatom Names

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Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011

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[ 390 ] records found...	Brief Records Multiple Pages Back to Search Form

Encyonema globiferum (Agardh) Ralfs in Pritchard 1861, p. 880
Basionym	Gloionema (Gloeonema) globiferum (globuliferum) Agardh 1830
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gloionema (Gloeonema) globiferum (globuliferum) Agardh 1830

Rhipidophora tincta (Agardh) Ralfs in Pritchard 1861, p. 770
Basionym	Gomphonema tinctum Agardh 1831
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gomphonema tinctum Agardh 1831 Licmophora paradoxa var. tincta (Agardh) Hustedt 1931 Licmophora tincta (Agardh) Grunow 1867

Navicula couperi (Bailey) Ralfs in Pritchard 1861, p. 898
Basionym	Pinnularia couperi (couperii) J.W. Bailey 1851
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula approximata var. couperi (J.W. Bailey) Cleve 1895 Navicula couperi (J.W. Bailey) Schmidt in Schmidt et al. 1874 Pinnularia couperi (couperii) J.W. Bailey 1851 Schizonema couperi (Bailey) Kuntze 1898

Stauroneis oblonga (Bailey) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera oblonga J.W. Bailey 1854
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Stauroptera oblonga J.W. Bailey 1854 Trachyneis aspera var. oblonga (J.W. Bailey) Cleve 1894 Trachyneis oblonga (J.W. Bailey) H. Peragallo & M. Peragallo 1898

Nitzschia latestriata (Brébisson in Kützing) Ralfs in Pritchard 1861, p. 780
Basionym	Amphiprora latestriata Brébisson in Kützing 1849
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Amphiprora latestriata Brébisson in Kützing 1849 Nitzschia bilobata W. Smith 1853 Homoeocladia bilobata (bilobiata) (W. Smith) Kuntze 1898 Scoliopleura latestriata (Brébisson in Kützing) Grunow 1878 Scoliotropis latestriata (Brébisson in Kützing) Cleve 1894

Pleurosigma subtile (subtilis) (Brébisson in Kutzing) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula subtilis (subtile) Brebisson in Kutzing 1849
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula subtilis (subtile) Brebisson in Kutzing 1849 Scalprum (Scalptrum) subtile (Brébisson in Kützing) Kuntze 1891

Tryblionella navicularis (Brébisson in Kützing) Ralfs in Pritchard 1861, p. 792
Basionym	Surirella navicularis Brébisson in Kützing 1849
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Nitzschia navicularis (Brébisson in Kützing) Grunow in Cleve & Grunow 1880 Homoeocladia navicularis (Brebisson ex Kützing) Kuntze 1898 Surirella navicularis Brébisson in Kützing 1849 Zotheca navicularis (Brebisson ex Kutzing) Pantocsek 1902

Asteromphalus arachne (Brébisson) Ralfs in Pritchard 1861, p. 837; pl. 5, fig. 66
Basionym	Spatangidium arachne Brébisson 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra arachne (Brébisson) Greville 1860 Spatangidium arachne Brébisson 1857 Asteromphalus arachne (Brébisson) Janisch 1861

Asteromphalus heptactis (Brébisson) Ralfs in Pritchard 1861, p. 838; pl. 8, fig. 21
Basionym	Spatangidium heptactis Brébisson 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra heptactis (Brébisson) Greville 1860 Spatangidium heptactis Brébisson 1857

Actinocyclus interpunctatus (Brightwell) Ralfs in Pritchard 1861, p. 835
Basionym	Actinoptychus interpunctatus Brightwell 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinoptychus interpunctatus Brightwell 1860 Eupodiscus interpunctatus (Brightwell) Grunow 1867

Actinoptychus spinosus (Brightwell) Ralfs in Pritchard 1861, p. 840
Basionym	Actinocyclus spinosus Brightwell 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinocyclus spinosus Brightwell 1860

Actinoptychus trilingulatus (Brightwell) Ralfs in Pritchard 1861, p. 840
Basionym	Actinocyclus trilingulatus Brightwell 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinocyclus trilingulatus Brightwell 1860 Schuettia trilingulata (Brightwell) De Toni 1894 Triceratium trilingulatum (Brightwell) Schmidt in Schmidt et al. 1874

Brightwellia coronata (Brightwell) Ralfs in Pritchard 1861, p. 940
Basionym	Craspedodiscus coronatus Brightwell 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Craspedodiscus coronatus Brightwell 1860

Coscinodiscus cervinus (Brightwell) Ralfs in Pritchard 1861, p. 831
Basionym	Hyalodiscus cervinus Brightwell 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Hyalodiscus cervinus Brightwell 1860

Dimeregramma (Dimerogramma) baldjickii (badjikii) (Brightwell) Ralfs in Pritchard 1861, p. 791
Basionym	Odontidium baldjickii Brightwell 1859
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Achnanthes baldjickii (Brightwell) Grunow in Cleve & Grunow 1880 Achnanthidium baldjikii (Brightwell) Grunow in Schmidt 1895 Actinoneis baldjikii (Brightwell) Cleve 1895 Odontidium baldjickii Brightwell 1859 Rhaphoneis (Raphoneis) baldjikii (Brightwell) Grunow 1862

Dimeregramma (Dimerogramma) speciosum (Brightwell) Ralfs in Pritchard 1861, p. 791
Basionym	Odontidium speciosum Brightwell 1859
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria speciosa (Brightwell) Grunow 1862 Nematoplata speciosa (Brightwell) Kuntze 1898 Odontidium speciosum Brightwell 1859

Micromega smithii (C. Agardh) Ralfs in Pritchard 1861, p. 930
Basionym	Schizonema smithii Agardh 1824
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Micromega smithii (Agardh) J.E. Gray 1864 Navicula smithii (Agardh) Van Heurck 1896 Schizonema smithii Agardh 1824

Micromega helminthosum (Chauvin ex Agardh) Ralfs in Pritchard 1861, p. 930
Basionym	Schizonema helmintosum Chauvin ex Duby 1830
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema helmintosum Chauvin ex Duby 1830

Donkinia angusta (Donkin) Ralfs in Pritchard 1861, p. 921
Basionym	Pleurosigma angustum Donkin 1858
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma angustum (Donkin) Cleve 1894 Pleurosigma angustum Donkin 1858 Donkinia recta var. angusta (Donkin) H. Peragallo 1891 Donkinia angusta (Donkin) Ralfs in Pritchard emend E. J. Cox 1983

Donkinia carinata (Donkin) Ralfs in Pritchard 1861, p. 921; pl. 8, fig. 49
Basionym	Pleurosigma carinatum (carinata) Donkin 1858
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pleurosigma carinatum (carinata) Donkin 1858 Donkinia carinata (Donkin) Ralfs in Pritchard emend E. J. Cox 1983

Donkinia minuta (Donkin) Ralfs in Pritchard 1861, p. 921
Basionym	Pleurosigma minutum Donkin 1858
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma rectum var. minuta (Donkin) Cleve 1894 Pleurosigma minutum Donkin 1858 Donkinia recta var. minuta (Donkin) H. Peragallo & M. Peragallo 1898 Donkinia minuta (Donkin) Ralfs in Pritchard emend E. J. Cox 1983 Donkinia recta var. minuta (Donkin) Carruthers 1864 Pleurosigma rectum var. minutum (Donkin) Carruthers 1864

Biddulphia amphicephala (Ehrenberg) Ralfs in Pritchard 1861, p. 849
Basionym	Odontella amphicephala Ehrenberg 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontella amphicephala Ehrenberg 1845

Biddulphia fragilaria (Ehrenberg) Ralfs in Pritchard 1861, p. 849
Basionym	Denticella fragilaria Ehrenberg 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticella fragilaria Ehrenberg 1844

Biddulphia polymera (Ehrenberg) Ralfs in Pritchard 1861, p. 848
Basionym	Denticella polymera Ehrenberg 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontella polymera (Ehrenberg) Kützing 1849 Denticella polymera Ehrenberg 1844

Biddulphia turgida (Ehrenberg) Ralfs in Pritchard 1861, p. 849
Basionym	Denticella turgida Ehrenberg 1840
Status	Valid
Comments	Isonym: See Biddulphia turgida (Ehrenberg) W. Smith 1856
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cerataulus turgidus (Ehrenberg) Ehrenberg 1844 Odontella turgida (Ehrenberg) De Toni 1894 Biddulphia granulata Roper 1859 Biddulphia turgida (Ehrenberg) W. Smith in Okeden 1855 Denticella turgida Ehrenberg 1840 Odontella turgida (Ehrenberg) Kützing 1844

Campylodiscus elegans (Ehrenberg) Ralfs in Pritchard 1861, p. 802
Basionym	Surirella elegans Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Surirella elegans Ehrenberg 1843 Suriraya elegans (Ehrenberg) De Toni 1892

Campylodiscus flexuosa (Ehrenberg) Ralfs in Pritchard 1861, p. 802
Basionym	Surirella flexuosa Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Spirodiscus flexuosa (Ehrenberg) Woodhead & Tweed 1960 Surirella flexuosa Ehrenberg 1843

Campylodiscus myodon (Ehrenberg) Ralfs in Pritchard 1861, p. 802
Basionym	Surirella myodon Ehrenberg 1837
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Surirella myodon Ehrenberg 1837

Cerataulus laevis (Ehrenberg) Ralfs in Pritchard 1861, p. 847
Basionym	Biddulphia laevis Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biddulphia laevis Ehrenberg 1843 Biddulphia levis Ehrenberg 1843 Pleurosira laevis (Ehrenberg) Compère 1982

Ceratoneis linea (Ehrenberg) Ralfs in Pritchard 1861, p. 783
Basionym	Synedra linea Ehrenberg 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Synedra linea Ehrenberg 1844

Cyclotella atlantica (Ehrenberg) Ralfs in Pritchard 1861, p. 812; pl. 15, fig. 3
Basionym	Discoplea atlantica Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea atlantica Ehrenberg 1854

Cyclotella atmosphaerica (Ehrenberg) Ralfs in Pritchard 1861, p. 812; pl. 15, fig. 1-2
Basionym	Discoplea atmosphaerica Ehrenberg 1848
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea atmosphaerica Ehrenberg 1848 Stephanodiscus atmosphaerica (Ehrenberg) Håkansson & Locker 1981

Cyclotella dendochaera (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea dendrochaera Ehrenberg 1848
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea dendrochaera Ehrenberg 1848

Cyclotella graeca (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea graeca Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Coscinodiscus graecus (Ehrenberg) Kützing 1844 Discoplea graeca Ehrenberg 1840

Cyclotella oligactis (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea oligactis Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cyclotella comta var. oligactis (Ehrenberg) Grunow in Van Heurck 1882 Cyclotella meneghiniana var. oligactis Pork & Pork 1958 Discoplea oligactis Ehrenberg 1854 Cyclotella comta f. oligactis (Ehrenberg) Kolbe 1927

Cyclotella oregonica (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea oregonica Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea oregonica Ehrenberg 1854 Stephanodiscus oregonica (Ehrenberg) H. Håkansson 1986

Cyclotella sinensis (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea sinensis Ehrenberg 1848
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea sinensis Ehrenberg 1848

Cyclotella umbilicata (Ehrenberg) Ralfs in Pritchard 1861, p. 811
Basionym	Discoplea umbilicata Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea umbilicata Ehrenberg 1854

Cyclotella undulata (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea undulata Ehrenberg 1854
Status	Valid	ill
Comments	Non Harting 1852
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea undulata Ehrenberg 1854

Cyclotella venusta (Ehrenberg) Ralfs in Pritchard 1861, p. 812
Basionym	Discoplea venusta Ehrenberg 1852
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Discoplea venusta Ehrenberg 1852

Cymatopleura regula (Ehrenberg) Ralfs in Pritchard 1861, p. 793
Basionym	Surirella regula Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cymatopleura solea f. regula (Ehrenberg) Hustedt 1957 Cymatopleura solea var. regula (Ehrenberg) Grunow 1862 Sphinctocystis regula (Ehrenberg) Kuntze 1898 Surirella regula Ehrenberg 1843 Cymatopleura librile var. regula (Ehrenberg) Descy 1983

Cymatopleura thermalis (Ehrenberg) Ralfs in Pritchard 1861, p. 940
Basionym	Navicula thermalis Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula thermalis Ehrenberg 1840 Nitzschia thermalis (Ehrenberg) Auerswald in Rabenhorst 1861-1882 Pinnularia thermalis Ehrenberg 1840 Surirella thermalis (Ehrenberg) Kützing 1844

Cymbella navicula (Ehrenberg) Ralfs in Pritchard 1861, p. 877
Basionym	Cocconema navicula Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cocconema navicula Ehrenberg 1854 Cymbella rupicola var. navicula (Ehrenberg) Cleve-Euler 1955

Diadesmis navicula (Ehrenberg) Ralfs in Pritchard 1861, p. 923
Basionym	Fragilaria navicula Ehrenberg 1839
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria navicula Ehrenberg 1839 Nematoplata navicula (Ehrenberg) Kuntze 1898 Schizonema navicula (Ehrenberg) Kuntze 1898

Dimeregramma (Dimerogramma) birostris (birostre) (Ehrenberg) Ralfs in Pritchard 1861, p. 790
Basionym	Fragilaria birostris Ehrenberg 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria birostris Ehrenberg 1844 Nematoplata (Nematoplate) birostris (Ehrenberg; Ehrenberg) Kuntze 1898

Dimeregramma (Dimerogramma) leptoceros (Ehrenberg) Ralfs in Pritchard 1861, p. 790
Basionym	Fragilaria leptoceros Ehrenberg 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria leptoceros Ehrenberg 1844 Odontidium leptoceros (Ehrenberg) Kützing 1849

Dimeregramma (Dimerogramma) pinnatum (Ehrenberg) Ralfs in Pritchard 1861, p. 791; pl. 8, fig. 4
Basionym	Staurosira pinnata Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Staurosira construens var. pinnata (Ehrenberg) Schumann 1867 Staurosira pinnata Ehrenberg 1843

Dimeregramma (Dimerogramma) rhombus (Ehrenberg) Ralfs in Pritchard 1861, p. 790
Basionym	Fragilaria rhombus Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria rhombus Ehrenberg 1854

Dimeregramma (Dimerogramma) surirella (Ehrenberg) Ralfs in Pritchard 1861, p. 791
Basionym	Fragilaria surirella Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria surirella Ehrenberg 1854

Donkinia cristata (Ehrenberg) Ralfs in Pritchard 1861, p. 920
Basionym	Navicula cristata Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula cristata Ehrenberg 1854

Donkinia inversa (Ehrenberg) Ralfs in Pritchard 1861, p. 921
Basionym	Navicula inversa Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula inversa Ehrenberg 1840

Encyonema arcus (Ehrenberg) Ralfs in Pritchard 1861, p. 880
Basionym	Gloeonema arcus Ehrenberg 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gloeonema arcus Ehrenberg 1856

Encyonema sinensis (Ehrenberg) Ralfs in Pritchard 1861, p. 879
Basionym	Gloeonema sinense Ehrenberg 1848
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gloeonema sinense Ehrenberg 1848 Encyonema sinense (Ehrenberg) Rabenhorst 1864

Epithemia beatorum (Ehrenberg) Ralfs in Pritchard 1861, p. 762
Basionym	Eunotia beatorum Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cystopleura beatorum (Ehrenberg) Kuntze 1891 Eunotia beatorum Ehrenberg 1854 Denticula beatorum (Ehrenberg) De Toni 1892

Epithemia cistula (Ehrenberg) Ralfs in Pritchard 1861, p. 762
Basionym	Eunotia cistula Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cystopleura cistula (Ehrenberg) Kuntze 1891 Eunotia cistula Ehrenberg 1854

Epithemia cocconema (Ehrenberg) Ralfs in Pritchard 1861, p. 762
Basionym	Eunotia cocconema Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cystopleura cocconema (Ehrenberg) Kuntze 1891 Eunotia cocconema Ehrenberg 1854

Epithemia compta (Ehrenberg) Ralfs in Pritchard 1861, p. 760
Basionym	Eunotia compta Ehrenberg
Status	Valid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Cystopleura compta (Ehrenberg) Kuntze 1891 Eunotia comta Ehrenberg 1840 Eunotia compta Ehrenberg

Epithemia electra (Ehrenberg) Ralfs in Pritchard 1861, p. 761
Basionym	Eunotia electra Ehrenberg
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Epithemia hellenica (Ehrenberg) Ralfs in Pritchard 1861, p. 760
Basionym	Epithemia argus auct. non Ehrenberg
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Epithemia argus auct. non Ehrenberg

Epithemia lunula (Ehrenberg) Ralfs in Pritchard 1861, p. 762
Basionym	Eunotia lunula Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cystopleura lunula (Ehrenberg) Kuntze 1891 Eunotia lunula Ehrenberg 1854

Epithemia mesogonglya (Ehrenberg) Ralfs in Pritchard 1861, p. 762
Basionym	Eunotia mesogonglya Ehrenberg
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Epithemia mesolepta (Ehrenberg) Ralfs in Pritchard 1861, p. 762
Basionym	Eunotia mesolepta Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cystopleura mesolepta (Ehrenberg) Kuntze 1891 Eunotia mesolepta Ehrenberg 1854

Epithemia sanctiantonii (sancti antonii) (Ehrenberg) Ralfs in Pritchard 1861, p. 938
Basionym	Eunotia sanctiantonii (sancti antonii) Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cystopleura sanctiantonii (sancti-antonii) (Ehrenberg) Kuntze 1891 Eunotia sanctiantonii (sancti antonii) Ehrenberg 1854

Eunotia hemicyclus (Ehrenberg) Ralfs in Pritchard 1861, p. 763
Basionym	Synedra hemicyclus Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Amphicampa hemicyclus (Ehrenberg) Karsten 1928 Ceratoneis hemicyclus (Ehrenberg) Grunow 1865 Pseudo-eunotia hemicyclus (Ehrenberg) Grunow in Van Heurck 1881 Synedra hemicyclus Ehrenberg 1840 Semiorbis hemicyclus (Ehrenberg) Patrick 1966

Eunotia robusta var. dodecaodon (Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia dodecaodon Ehrenberg 1854
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia dodecaodon Ehrenberg 1854 Eunotia robusta var. dodecaodon (Ehrenberg) Hustedt in Schmidt 1911

Eunotia robusta var. pentodon (Ehrenberg) Ralfs in Pritchard 1861, p. 763
Basionym	Eunotia pentodon Ehrenberg 1837
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia pentodon Ehrenberg 1837

Eunotia robusta var. tetraodon (Ehrenberg) Ralfs in Pritchard 1861, p. 736
Basionym	Eunotia tetraodon Ehrenberg 1838
Status	Invalid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Himantidium tetraodon (Ehrenberg) Brebisson in litt., Kutzing 1849 Eunotia diadema var. tetraodon (Ehrenberg) Cleve-Euler 1953 Eunotia tetraodon Ehrenberg 1838 Eunotia robusta var. tetrodon (Ehrenberg) Carruthers 1864

Fragilaria amphilepta (Ehrenberg) Ralfs in Pritchard 1861, p. 777
Basionym	Fragilaria amphilepta Ehrenberg
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Melosira arctica (Ehrenberg) Ralfs in Pritchard 1861, p. 819
Basionym	Gaillonella (Gallionella) arctica (Dickie, Ehrenberg) 1853
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) arctica (Dickie, Ehrenberg) Ehrenberg 1853 Melosira arctica Dickie in litt., Ehrenberg 1853 Lysigonium arcticum (Ehrenberg) Kuntze 1891 Melosira arctica Dickie 1852

Melosira californica (Ehrenberg) Ralfs in Pritchard 1861, p. 819
Basionym	Gaillonella californica Ehrenberg 1852
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella californica Ehrenberg 1852 Lysigonium californicum (Ehrenberg) Kuntze 1891 Aulacoseira californica (Ehrenberg) V. Houk 2010

Melosira campylosira (Ehrenberg) Ralfs in Pritchard 1861, p. 819
Basionym	Gaillonella campylosira Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella campylosira Ehrenberg 1854 Lysigonium campylosira (Ehrenberg) Kuntze 1891 Aulacoseira campylosira (Ehrenberg) V. Houk 2010

Melosira circularis (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) circularis Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) circularis Ehrenberg 1854 Lysigonium circulare (Ehrenberg) Kuntze 1891

Melosira coarctata (Ehrenberg) Ralfs in Pritchard 1861, p. 818; pl. 11, fig. 20, 27
Basionym	Gaillonella (Gallionella) coarctata Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) coarctata Ehrenberg 1843 Lysigonium coarctatum (Ehrenberg) Kuntze 1891

Melosira crenulata var. laevis (Ehrenberg) Ralfs in Pritchard 1861, p. 818
Basionym	Gaillonella (Gallionella) laevis Ehrenberg 1854
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Gaillonella (Gallionella) laevis Ehrenberg 1854 Melosira italica f. laevis (Ehrenberg) Cleve-Euler 1951 Melosira italica var. laevis (Ehrenberg) Ralfs in Pritchard 1861 Melosira laevis (Ehrenberg) Ralfs in Pritchard 1861 Melosira italica var. laevis (Ehrenberg) Frenguelli 1933 Lysigonium laeve (Ehrenberg) Kuntze 1891 Melosira italica f. laevis (Ehrenberg) Cleve-Euler 1915

Melosira gallica (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) gallica Ehrenberg 1837
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) gallica Ehrenberg 1837 Lysigonium gallicum (Ehrenberg) Kuntze 1891

Melosira granulata (Ehrenberg) Ralfs in Pritchard 1861, p. 820
Basionym	Gaillonella granulata Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella granulata Ehrenberg 1843 Lysigonium granulatum (Ehrenberg) Kuntze 1891 Melosira polymorpha subsp. granulata (Ehrenberg) Bethge 1925 Melosira punctata var. granulata (Ehrenberg) Cleve & Möller 1879 Orthosira granulata (Ehrenberg) Schonfeldt 1907 Aulacoseira granulata (Ehrenberg) Simonsen 1979

Melosira halophila (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) halophila Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) halophila Ehrenberg 1854 Lysigonium halophilum (Ehrenberg) Kuntze 1891

Melosira horologium (Ehrenberg) Ralfs in Pritchard 1861, p. 819; pl. 5, fig. 62
Basionym	Gaillonella horologium Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella horologium Ehrenberg 1843 Sphaerotermia horologium (Ehrenberg) Ehrenberg 1854 Lysigonium horologium (Ehrenberg) Kuntze 1891 Miosira horologium (Ehrenberg) V. Houk 2010

Melosira italica var. laevis (Ehrenberg) Ralfs in Pritchard 1861, p. 818
Basionym	Gaillonella (Gallionella) laevis Ehrenberg 1854
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Gaillonella (Gallionella) laevis Ehrenberg 1854 Melosira crenulata var. laevis (Ehrenberg) Ralfs in Pritchard 1861 Melosira italica f. laevis (Ehrenberg) Cleve-Euler 1951 Melosira laevis (Ehrenberg) Ralfs in Pritchard 1861 Melosira italica var. laevis (Ehrenberg) Frenguelli 1933 Lysigonium laeve (Ehrenberg) Kuntze 1891 Melosira italica f. laevis (Ehrenberg) Cleve-Euler 1915

Melosira laevis (Ehrenberg) Ralfs in Pritchard 1861, p. 818
Basionym	Gaillonella (Gallionella) laevis Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) laevis Ehrenberg 1854 Melosira crenulata var. laevis (Ehrenberg) Ralfs in Pritchard 1861 Melosira italica f. laevis (Ehrenberg) Cleve-Euler 1951 Melosira italica var. laevis (Ehrenberg) Ralfs in Pritchard 1861 Melosira italica var. laevis (Ehrenberg) Frenguelli 1933 Lysigonium laeve (Ehrenberg) Kuntze 1891 Melosira italica f. laevis (Ehrenberg) Cleve-Euler 1915

Melosira laminaris (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) laminaris Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) laminaris Ehrenberg 1854 Lysigonium laminare (Ehrenberg) Kuntze 1891

Melosira marchica (Ehrenberg) Ralfs in Pritchard 1861, p. 820
Basionym	Gaillonella (Gallionella) marchica Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) marchica Ehrenberg 1843 Lysigonium marchicum (Ehrenberg) Trevisan 1848

Melosira mesodon (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) mesodon Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) mesodon Ehrenberg 1854 Lysigonium mesodon (Ehrenberg) Kuntze 1891

Melosira scala (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) scala Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) scala Ehrenberg 1854 Melosira distans var. scala (Ehrenberg) Grunow in Van Heurck 1882 Lysigonium scala (Ehrenberg) Kuntze 1891

Melosira taeniata (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) taeniata Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) taeniata Ehrenberg 1854 Lysigonium taeniatum (Ehrenberg) Kuntze 1891

Melosira trachealis (Ehrenberg) Ralfs in Pritchard 1861, p. 821
Basionym	Gaillonella (Gallionella) trachealis Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) trachealis Ehrenberg 1854 Lysigonium tracheale (Ehrenberg) Kuntze 1891

Navicula birostris (Ehrenberg) Ralfs in Pritchard 1861, p. 902
Basionym	Pinnularia birostris Ehrenberg 1842
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia birostris Ehrenberg 1842

Navicula cincta (Ehrenberg) Ralfs in Pritchard 1861, p. 901
Basionym	Pinnularia cincta Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia cincta Ehrenberg 1854 Schizonema cinctum (Ehrenberg) Kuntze 1898

Navicula digitus (Ehrenberg) Ralfs in Pritchard 1861, p. 908
Basionym	Pinnularia digitus Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia digitus Ehrenberg 1854

Navicula diomphala (Ehrenberg) Ralfs 1861, p. 900
Basionym	Pinnularia diomphala Ehrenberg 1843
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula diomphala (Ehrenberg) Kützing 1844 Pinnularia diomphala Ehrenberg 1843

Navicula dux (Ehrenberg) Ralfs in Pritchard 1861, p. 908
Basionym	Pinnularia dux Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia dux Ehrenberg 1854

Navicula kerguelensis (Ehrenberg) Ralfs in Pritchard 1861, p. 909
Basionym	Pinnularia kerguelensis Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia kerguelensis Ehrenberg 1854

Navicula leptostigma (Ehrenberg) Ralfs in Pritchard 1861, p. 906
Basionym	Pinnularia leptostigma Ehrenberg 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia leptostigma Ehrenberg 1845

Navicula megalodon (Ehrenberg) Ralfs in Pritchard 1861, p. 910
Basionym	Pinnularia megalodon Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia megalodon Ehrenberg 1854

Navicula oceanica (Ehrenberg) Ralfs in Pritchard 1861, p. 910
Basionym	Pinnularia oceanica Ehrenberg 1844
Status	Valid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Pinnularia oceanica Ehrenberg 1844

Navicula parva (Ehrenberg) Ralfs in Pritchard 1861, p. 897
Basionym	Stauroptera parva Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula stauroptera f. parva (Ehrenberg; Grunow) Cleve 1895 Pinnularia gibba var. parva (Ehrenberg) Hustedt 1930 Pinnularia parva (parvula) (Ehrenberg) Gregory 1854 Stauroptera parva Ehrenberg 1843 Pinnularia parva (Ehrenberg) Schaarschmidt 1881

Navicula placenta (Ehrenberg) Ralfs in Pritchard 1861, p. 899
Basionym	Ceratoneis placenta Ehrenberg 1854
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Ceratoneis placenta Ehrenberg 1854 Navicula placenta Ehrenberg 1854 Decussata placenta (Ehrenberg) H. Lange-Bertalot 2000 Schizonema placenta (Ehrenberg) Kuntze 1898

Navicula proserpinae (Ehrenberg) Ralfs in Pritchard 1861, p. 893
Basionym	Diploneis proserpinae Ehrenberg 1859
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Diploneis proserpinae Ehrenberg 1859

Navicula signata (Ehrenberg) Ralfs in Pritchard 1861, p. 900
Basionym	Pinnularia signata Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia signata Ehrenberg 1854

Navicula subacuta (Ehrenberg) Ralfs in Pritchard 1861, p. 908
Basionym	Pinnularia subacuta Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula major var. subacuta (Ehrenberg) Fricke 1902 Pinnularia major (maior) var. subacuta (Ehrenberg) Cleve 1895 Pinnularia subacuta Ehrenberg 1854

Navicula taeniata (Ehrenberg) Ralfs in Pritchard 1861, p. 900; pl. 15, fig. 15
Basionym	Pinnularia taeniata Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Mastogloia taeniata (Ehrenberg) Rabenhorst 1864 Pinnularia taeniata Ehrenberg 1854

Navicula trigonocephala (Ehrenberg) Ralfs in Pritchard 1861, p. 909
Basionym	Pinnularia trigonocephala Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia trigonocephala Ehrenberg 1854

Navicula vespa (Ehrenberg) Ralfs in Pritchard 1861, p. 902
Basionym	Pinnularia vespa Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia vespa Ehrenberg 1854

Nitzschia dianae (Ehrenberg) Ralfs in Pritchard 1861, p. 780
Basionym	Eunotia dianae Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Hantzschia dianae (Ehrenberg) Prochazka 1923 Homoeocladia dianae (Ehrenberg) Kuntze 1898 Eunotia dianae Ehrenberg 1840

Nitzschia entomon (Ehrenberg) Ralfs in Pritchard 1861, p. 780
Basionym	Synedra entomon Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia entomon (entemon) (Ehrenberg) Kuntze 1898 Synedra entomon Ehrenberg 1843

Nitzschia gigantea (Ehrenberg) Ralfs in Pritchard 1861, p. 782
Basionym	Synedra gigantea Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia gigantea (Ehrenberg) Kuntze 1898 Synedra gigantea Ehrenberg 1840

Nitzschia spectabilis (Ehrenberg) Ralfs in Pritchard 1861, p. 782
Basionym	Synedra spectabilis Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Hantzschia spectabilis (Ehrenberg) Hustedt 1959 Synedra spectabilis Ehrenberg 1843 Bacillaria spectabilis (Ehrenberg) Elmore in Barbour 1895

Nitzschia valens (Ehrenberg) Ralfs in Pritchard 1861, p. 782; pl. 12, fig. 4
Basionym	Synedra valens Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia valens (Ehrenberg) Kuntze 1898 Synedra valens Ehrenberg 1843

Odontidium anceps (Ehrenberg) Ralfs in Pritchard 1861, p. 776
Basionym	Fragilaria anceps Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria anceps Ehrenberg 1843 Neodiatoma anceps (Ehrenberg) Kuntze 1891 Diatoma anceps (Ehrenberg) Kirchner 1878 Diatoma hiemale (hyemale) var. anceps (Ehrenberg) Cleve-Euler 1953 Meridion anceps (Ehrenberg) D. M. Williams 1985

Odontidium cretae (Ehrenberg) Ralfs in Pritchard 1861, p. 776
Basionym	Fragilaria cretae Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria cretae Ehrenberg 1854 Nematoplata (Nematoplate) cretae (Ehrenberg) Kuntze 1898 Pseudonitzschia cretae (Ehrenberg) Forti ex Tempère & Peragallo 1914

Plagiogramma himantidium (Ehrenberg) Ralfs in Pritchard 1861, p. 775
Basionym	Heteromphala himantidium Ehrenberg 1859
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Heteromphala himantidium Ehrenberg 1859

Pleurosigma curvulum (Ehrenberg) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula curvula Ehrenberg 1838
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula curvula Ehrenberg 1838 Scalprum (Scalptrum) curvulum (Ehrenberg) Kuntze 1891 Gyrosigma spenceri (Ehrenberg) Frenguelli 1938

Pleurosigma lamprocampum (Ehrenberg) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula lamprocampa Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula lamprocampa Ehrenberg 1840 Pleurosigma tenuissimum var. lamprocampum (Ehrenberg) H. Peragallo 1891 Scalprum (Scalptrum) lamprocampum (Ehrenberg) Kuntze 1891

Pleurosigma sinensis (Ehrenberg) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula sinensis Ehrenberg 1848
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma balticum var. sinensis (Ehrenberg) Cleve 1894 Navicula sinensis Ehrenberg 1848 Pleurosigma balticum var. sinensis (Ehrenberg; Ehrenberg) F.W. Mills 1934 Pleurosigma sinense (Ehrenberg; Ehrenberg) Cleve & Möller 1879 Scalprum (Scalptrum) sinense (Ehrenberg; Ehrenberg) Kuntze 1891 Gyrosigma sinensis (Ehrenberg) Desikachary 1988

Pleurosigma sinuosum (Ehrenberg) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula sinuosa Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula sinuosa Ehrenberg 1840 Scalprum (Scalptrum) sinuosum (Ehrenberg) Kuntze 1891

Pyxidicula scarabaeus (Ehrenberg) Ralfs in Pritchard 1861, p. 825
Basionym	Dictyopyxis scarabaeus Ehrenberg 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Dictyopyxis scarabaeus Ehrenberg 1845

Stauroneis amphioxys (Ehrenberg) Ralfs in Pritchard 1861, p. 915
Basionym	Stauroptera amphioxys Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Stauroptera amphioxys Ehrenberg 1854

Stauroneis dendrobates (Ehrenberg) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera dendrobates Ehrenberg 1848
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Stauroptera dendrobates Ehrenberg 1848

Stauroneis granulata (Ehrenberg) Ralfs in Pritchard 1861, p. 913
Basionym	Stauroptera granulata Ehrenberg 1848
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Stauroptera granulata Ehrenberg 1848

Stauroneis mesogongyla (Ehrenberg) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera mesogongyla Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Stauroptera mesogongyla Ehrenberg 1854

Stauroneis peregrina (Ehrenberg) Ralfs in Pritchard 1861, p. 915
Basionym	Stauroptera peregrina Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Stauroptera peregrina Ehrenberg 1854

Stauroneis platycephala (Ehrenberg) Ralfs in Pritchard 1861, p. 912
Basionym	Stauroptera platycephala Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula platycephala (Ehrenberg) Cleve & Möller 1882 Pinnularia platycephala (Ehrenberg) Cleve 1891 Stauroptera platycephala Ehrenberg 1854 Schizonema platycephalum (Ehrenberg) Kuntze 1898

Stauroneis roraimae (Ehrenberg) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroneis roraimae Ehrenberg
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stauroneis semicruciata (Ehrenberg) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera semicruciata Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula semicruciata (Ehrenberg) Schmidt in Schmidt et al. 1876 Pinnularia semicruciata ( Schmidt in Schmidt et al.) A. Cleve 1895 Stauroptera semicruciata Ehrenberg 1843

Stauroneis tuscula (Ehrenberg) Ralfs in Pritchard 1861, p. 912
Basionym	Pinnularia tuscula Ehrenberg 1840
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia tuscula Ehrenberg 1840

Terpsinoë asiatica (Ehrenberg) Ralfs in Pritchard 1861, p. 859
Basionym	Tetragramma asiatica Ehrenberg
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Tetracyclus elegans (Ehrenberg) Ralfs in Pritchard 1861, p. 806
Basionym	Biblarium elegans Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biblarium elegans Ehrenberg 1854 Tetracyclus lacustris var. elegans (Ehrenberg) Hustedt 1914

Tetracyclus rhombus (Ehrenberg) Ralfs in Pritchard 1861, p. 807
Basionym	Biblarium rhombus Ehrenberg 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biblarium rhombus Ehrenberg 1845

Xanthiopyxis hirsuta (Ehrenberg) Ralfs in Pritchard 1861, p. 827
Basionym	Pyxidicula hirsuta Ehrenberg 1844
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pyxidicula hirsuta Ehrenberg 1844 Xanthiopyxis hirsuta (Ehrenberg) De Toni 1894

Eunotia robusta var. decaodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia decaodon (decadon) Ehrenberg 1840
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Climacidium decaodon Ehrenberg 1869 Eunotia decaodon (decadon) Ehrenberg 1840 Eunotia robusta var. decaodon (Ehrenberg) Hustedt in Schmidt 1911

Eunotia robusta var. diadema (Ehrenberg; Ehrenberg) Ralfs 1861, p. 763
Basionym	Eunotia diadema Ehrenberg 1837
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia diadema Ehrenberg 1837 Eunotia serra var. diadema (Ehrenberg) Patrick 1958 Eunotia robusta var. diadema (Ehrenberg) Carruthers 1864

Eunotia robusta var. diodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763
Basionym	Eunotia diodon Ehrenberg; Ehrenberg
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Eunotia robusta var. enneodon (ennaodon) (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia enneodon Ehrenberg; Ehrenberg
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Eunotia robusta var. hendecaodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia hendecaodon Ehrenberg 1840
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia hendecaodon Ehrenberg 1840 Eunotia monodon var. hendecaodon (Ehrenberg) Heribaud 1893 Eunotia robusta var. hendecaodon (Ehrenberg) Grunow in Van Heurck 1881

Eunotia robusta var. heptaodon (heptodon) (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia heptaodon Ehrenberg; Ehrenberg
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Eunotia robusta var. octodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia octodon Ehrenberg 1840
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia octodon Ehrenberg 1840 Eunotia robusta var. octodon (Ehrenberg) Hustedt in A.Schmidt 1911

Eunotia robusta var. polyodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia polyodon Ehrenberg 1845
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Himantidium polyodon (Ehrenberg; Ehrenberg) Brun 1880 Eunotia polyodon Ehrenberg 1845 Eunotia robusta var. polyodon (Ehrenberg) Hustedt in A. Schmidt 1911

Eunotia robusta var. prionotus (prionotis) (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia prionotus Ehrenberg 1840
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia prionotus Ehrenberg 1840 Eunotia robusta var. prionotis (Ehrenberg) Hustedt in A. Schmidt 1911

Eunotia robusta var. serrulata (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763-764
Basionym	Eunotia serrulata Ehrenberg 1840
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia serrulata Ehrenberg 1840

Eunotia robusta var. triodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 763
Basionym	Eunotia triodon Ehrenberg 1837
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Eunotia triodon Ehrenberg 1837 Eunotia robusta var. triodon (Ehrenberg) Carruthers 1864

Himantidium parallelum (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 765
Basionym	Eunotia parallelum Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Eunotia parallelum Ehrenberg 1854

Himantidium praeruptum (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 765
Basionym	Eunotia praerupta Ehrenberg; Ehrenberg
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Melosira punctigera (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 819
Basionym	Gaillonella (Gallionella) punctigera Ehrenberg 1842
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gaillonella (Gallionella) punctigera Ehrenberg 1842

Micromega agardhii (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema agardhi (agardhii) Ehrenberg 1835
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia agardhii (Ehrenberg) Edwards 1870 Schizonema agardhi (agardhii) Ehrenberg 1835

Navicula styliformis (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 907
Basionym	Pinnularia styliformis Ehrenberg 1843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia styliformis Ehrenberg 1843

Nitzschia amphilepta (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 780
Basionym	Eunotia amphilepta Ehrenberg 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Eunotia amphilepta Ehrenberg 1845

Pleurosigma simum (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula sima Ehrenberg 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula sima Ehrenberg 1845

Tetracyclus crux (Ehrenberg; Ehrenberg) Ralfs in Pritchard 1861, p. 807
Basionym	Biblarium crux (Ehrenberg) 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biblarium crux (Ehrenberg) Ehrenberg 1845 Navicula crux Ehrenberg 1838

Pleurosigma scalprum (Gaillon in Turpin) Ralfs in Pritchard 1861, p. 919
Basionym	Navicula scalprum Gaillon in Turpin 1827
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma attenuatum var. scalprum (Gaillon in Turpin) Cleve 1894 Navicula scalprum Gaillon in Turpin 1827 Sigmatella scalprum (Gaillon in Turpin) Brébisson 1838 Cymbella scalprum (Gaillon in Turpin) Agardh 1830 Gyrosigma scalprum (Gaillon in Turpin) Sterrenburg 1992 Scalprum scalprum (Gaillon) Kuntze 1891 Gyrosigma scalprum (Gaillon in Turpin) Sterrenburg 1992

Actinocyclus ralfsii var. sparsus (Gregory) Ralfs in Pritchard 1861, p. 835
Basionym	Eupodiscus sparsus Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinocyclus ehrenbergii var. sparsa (Gregory) Hustedt 1929 Actinocyclus octonarius var. sparsus (Gregory) Hendey 1954 Actinocyclus sparsus (Gregory) Rattray 1890 Eupodiscus sparsus Gregory 1857

Actinocyclus subtilis (Gregory) Ralfs in Pritchard 1861, p. 835
Basionym	Eupodiscus subtilis Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Eupodiscus subtilis Gregory 1857

Bacillaria socialis (Gregory) Ralfs in Pritchard 1861, p. 784
Basionym	Nitzschia socialis Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Nitzschia socialis Gregory 1857

Dimeregramma (Dimerogramma) capitatum (Gregory) Ralfs in Pritchard 1861, p. 790
Basionym	Denticula capitata Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula capitata Gregory 1857

Dimeregramma (Dimerogramma) distans (Gregory) Ralfs in Pritchard 1861, p. 790; pl. 4, fig. 34
Basionym	Denticula distans Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Glyphodesmis distans (Gregory) Grunow in Van Heurck 1881 Denticula distans Gregory 1857

Dimeregramma (Dimerogramma) fulvum (Gregory) Ralfs in Pritchard 1861, p. 790
Basionym	Denticula fulva Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula fulva Gregory 1857

Dimeregramma (Dimerogramma) marinum (Gregory) Ralfs in Pritchard 1861, p. 790
Basionym	Denticula marina Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula marina Gregory 1857

Dimeregramma (Dimerogramma) minor (minus) (Gregory) Ralfs in Pritchard 1861, p. 790
Basionym	Denticula minor Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula minor Gregory 1857

Dimeregramma (Dimerogramma) nanum (Gregory) Ralfs in Pritchard 1861, p. 790; pl. 4, fig. 33
Basionym	Denticula nana Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula nana Gregory 1857 Dimeregramma (Dimerogramma) minor (minus) var. nana (Gregory) Van Heurck 1885

Navicula acutiuscula (Gregory) Ralfs in Pritchard 1861, p. 906
Basionym	Pinnularia acutiuscula Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula zostereti var. acutiuscula (Gregory) Cleve 1883 Pinnularia acutiuscula Gregory 1856

Navicula allmaniana (Gregory) Ralfs in Pritchard 1861, p. 899
Basionym	Pinnularia allmaniana Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Heteroneis allmanniana (allmaniana) (Gregory) E. Jørgensen 1905 Pinnularia allmaniana Gregory 1857 Cocconeis allmanniana (Gregory) Grunow 1867

Navicula digitoradiata (Gregory) Ralfs in Pritchard 1861, p. 904
Basionym	Pinnularia digitoradiata (digito-radiata) Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia digitoradiata (digito-radiata) Gregory 1856

Navicula elginensis (Gregory) Ralfs in Pritchard 1861, p. 902
Basionym	Pinnularia elginensis Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia elginensis Gregory 1856 Placoneis dicephala var. elginensis (Gregory) Mereschkowsky 1903 Placoneis elginensis (Gregory) Cox 1987

Navicula ergadensis (Gregory) Ralfs in Pritchard 1861, p. 907
Basionym	Pinnularia ergadensis Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia ergadensis Gregory 1856 Oestrupia ergadensis (Gregory) A. Witkowski, H. Lange-Bertalot & D. Metzeltin 2000

Navicula fortis (Gregory) Ralfs in Pritchard 1861, p. 905
Basionym	Pinnularia fortis Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia fortis Gregory 1856 Schizonema forte (Gregory) Kuntze 1898

Navicula fusca (Gregory) Ralfs in Pritchard 1861, p. 898
Basionym	Navicula smithiia var. fusca Gregory
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Navicula globiceps (Gregory) Ralfs in Pritchard 1861, p. 897
Basionym	Pinnularia globiceps Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia globiceps Gregory 1856 Schizonema globiceps (Gregory) Kuntze 1898

Navicula gracillima (Gregory) Ralfs in Pritchard 1861, p. 902
Basionym	Pinnularia gracillima Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia gracillima Gregory 1856 Navicula gracillima (Gregory) Grunow 1860 Schizonema gracillimum (Gregory) Kuntze 1898

Navicula inflexa (Gregory) Ralfs in Pritchard 1861, p. 905
Basionym	Pinnularia inflexa Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia inflexa Gregory 1856 Schizonema inflexum (Gregory) Kuntze 1898

Navicula linearis (Gregory) Ralfs in Pritchard 1861, p. 902
Basionym	Pinnularia linearis Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula gracillima var. linearis (Gregory) Rabenhorst 1864 Pinnularia linearis Gregory 1856

Navicula longa (Gregory) Ralfs in Pritchard 1861, p. 906
Basionym	Pinnularia longa Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia longa Gregory 1856

Navicula nana (Gregory) Ralfs in Pritchard 1861, p. 909
Basionym	Pinnularia nana Gregory ex Carruthers in J. E. Gray 1864
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia nana Gregory ex Carruthers in J. E. Gray 1864

Navicula nitescens (Gregory) Ralfs in Pritchard 1861, p. 898
Basionym	Navicula smithii var. nitescens Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula smithii var. nitescens Gregory 1857 Diploneis nitescens (Gregory) Cleve 1894 Navicula nitescens (Gregory) Gregory 1857 Schizonema nitescens (Gregory) Kuntze 1898

Navicula subcapitata (Gregory) Ralfs in Pritchard 1861, p. 902
Basionym	Pinnularia subcapitata Gregory 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula gracillima var. subcapitata (Gregory) Rabenhorst 1864 Navicula interrupta f. subcapitata (Gregory) Fritsch 1918 Pinnularia gracillima var. subcapitata (Gregory) F.W. Mills 1934 Pinnularia subcapitata Gregory 1856 Schizonema subcapitatum (Gregory) Kuntze 1898

Navicula suborbicularis (Gregory) Ralfs in Pritchard 1861, p. 898
Basionym	Navicula smithii var. suborbicularis Gregory 1857
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula smithii var. suborbicularis Gregory 1857 Navicula suborbicularis (Gregory) Donkin 1870 Schizonema suborbiculare (Gregory) Kuntze 1898

Navicula subtilis (Gregory) Ralfs in Pritchard 1861, p. 904
Basionym	Navicula directa var. subtilis Gregory
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Plagiogramma interruptum (Gregory) Ralfs in Pritchard 1861, p. 774
Basionym	Denticula interrupta Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula interrupta Gregory 1857

Plagiogramma laevis (leve) (Gregory) Ralfs in Pritchard 1861, p. 775
Basionym	Denticula laevis Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Denticula laevis Gregory 1857

Stephanopyxis turris (Greville & Arnott) Ralfs in Pritchard 1861, p. 826; pl. 5, fig. 74
Basionym	Cresswellia turris Greville in Gregory 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cresswellia turris Greville in Gregory 1857

Asteromphalus dallasianus (Greville) Ralfs in Pritchard 1861, p. 836
Basionym	Asterolampra dallasiana Greville 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra dallasiana Greville 1860

Asteromphalus hiltonianus (Greville) Ralfs in Pritchard 1861, p. 837
Basionym	Asterolampra hiltoniana Greville 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra hiltoniana Greville 1860

Asteromphalus roperianus (Greville) Ralfs in Pritchard 1861, p. 838
Basionym	Asterolampra roperiana Greville 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra roperiana Greville 1860

Asteromphalus shadboltianus (Greville) Ralfs in Pritchard 1861, p. 838
Basionym	Asterolampra shadboltiana Greville 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra shadboltiana Greville 1860

Asteromphalus stellatus (Greville) Ralfs in Pritchard 1861, p. 838
Basionym	Asterolampra stellata Greville 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra stellata Greville 1860

Asteromphalus wallichianus (Greville) Ralfs in Pritchard 1861, p. 837
Basionym	Asterolampra wallichiana Greville 1860
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Asterolampra wallichiana Greville 1860

Donkinia compacta (Greville) Ralfs in Pritchard 1861, p. 921
Basionym	Pleurosigma compactum Greville 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Amphiprora ralfsii Walker-Arnott 1858 Gyrosigma compactum (Greville) Cleve 1894 Pleurosigma compactum Greville 1857 Rhoicosigma compactum (Greville) Grunow 1867

Micromega comoides (Greville) Ralfs in Pritchard 1861, p. 934
Basionym	Berkeleya rutilans var. comoides Grunow 1880
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya rutilans var. comoides Grunow 1880

Micromega obtusum (Greville) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema obtusum Greville
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stephanopyxis ferox (Greville) Ralfs in Pritchard 1861, p. 826; pl. 5, fig. 75
Basionym	Cresswellia ferox Greville 1859
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cresswellia ferox Greville 1859

Stephanopyxis turgida (Greville) Ralfs in Pritchard 1861, p. 826
Basionym	Cresswellia turgida Greville 1859
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cresswellia turgida Greville 1859

Micromega parasiticum (Griffiths in Harvey) Ralfs in Pritchard 1861, p. 932
Basionym	Schizonema parasiticum Griffith in Harvey 1841
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya parasitica (Griffith in W.H. Harvey) Grunow in Van Heurck 1880 Berkeleya rutilans var. parasitica (Griffith in Harvey) Peragallo & Peragallo 1897-1908 Amphipleura rutilans var. parasitica (Griffith in W.H. Harvey) Cleve-Euler 1949 Micromega parasiticum (Griffith in Harvey) Kützing 1844 Carrodoria parasitica (Griffith in W.H. Harvey) Kuntze 1898 Schizonema parasiticum Griffith in Harvey 1841

Micromega laciniatum (Harvey) Ralfs in Pritchard 1861, p. 932
Basionym	Schizonema laciniatum Harvey 1841
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema laciniatum Harvey 1841

Micromega torquatum (Harvey) Ralfs in Pritchard 1861, p. 930
Basionym	Schizonema smithii var. torquatum Harvey 1841
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Micromega setaceum var. torquatum (Harvey) Kützing 1849 Navicula torquata (Harvey; W. Smith) Hustedt 1939 Schizonema smithii var. torquatum Harvey 1841 Schizonema torquatum (Harvey) Meneghini 1853 Navicula ramosissima var. torquata (Harvey) R. Ross in Hartley 1986 Micromega torquatum (Kützing) Crouan frat. 1861 Schizonema torquatum (Harvey) W. Smith 1856

Micromega wyattii (Harvey) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema wyattii (wyattiae) Harvey 1841
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema wyattii (wyattiae) Harvey 1841

Zygoceros mobiliensis (J. Bailey) Ralfs in Pritchard 1861, p. 850; pl. 6, fig. 11
Basionym	Zygoceros mobiliensis J.W. Bailey 1851
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biddulphia mobiliensis (J.W. Bailey) Grunow in Van Heurck 1882 Denticella mobiliensis (J.W. Bailey) Grunow 1884 Denticula mobiliensis (J.W. Bailey) Grunow 1884 Zygoceros mobiliensis J.W. Bailey 1851 Denticella mobilensis (Bailey) Ehrenberg 1853

Terpsinoe americana (J.W. Bailey) Ralfs in Pritchard 1861, p. 859
Basionym	Tetragramma americana J.W. Bailey 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tetragramma americana J.W. Bailey 1854 Triceratium americanum (americana) (J.W. Bailey) Cleve-Euler 1951

Tryblionella circumsuta (J.W. Bailey) Ralfs in Pritchard 1861, p. 792
Basionym	Surirella circumsuta J.W. Bailey 1851
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Nitzschia circumsuta (J.W. Bailey) Grunow 1878 Baileya circumsuta (J. W. Bailey) Marsson 1901 Homoeocladia circumsuta (J.W. Bailey) Kuntze 1898 Surirella circumsuta J.W. Bailey 1851

Actinoptychus undulatus (Kützing) Ralfs in Pritchard 1861, p. 839; pl. 5, fig. 88
Basionym	Actinocyclus undulatus Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinocyclus undulatus Kützing 1844

Biddulphia obtusa (Kützing) Ralfs in Pritchard 1861, p. 848
Basionym	Odontella obtusa Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biddulphia aurita var. obtusa (Kützing) Hustedt 1930 Odontella obtusa Kützing 1844 Odontella aurita var. obtusa (Kützing) Denys 1982 Biddulphia roperiana var. obtusa (Kützing) Frenguelli 1938 Biddulphia obtusa (Kützing) Grunow 1867 Biddulphia roperiana f. obtusa (Kützing) Frenguelli 1930

Biddulphia subaequa (Kützing) Ralfs in Pritchard 1861, p. 848
Basionym	Odontella subaequa Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontella subaequa Kützing 1844

Ceratoneis acicularis (Kützing) Ralfs in Pritchard 1861, p. 783
Basionym	Synedra acicularis Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia acicularis (Kützing) Kuntze 1898 Nitzschia acicularis (Kützing) W. Smith 1853 Nitzschiella acicularis (Kützing) Rabenhorst 1864 Synedra acicularis Kützing 1844

Cymatopleura multifasciata (Kützing) Ralfs in Pritchard 1861, p. 940
Basionym	Frustulia multifasciata Kützing 1833
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Frustulia multifasciata Kützing 1833 Surirella multifasciata (Kützing) Kützing 1844

Micromega bryopsis (Kützing) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema bryopsis Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema bryopsis Kützing 1844

Micromega capitatum (Kützing) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema capitatum Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya capitata (Kützing) Grunow 1880 Carrodoria capitata (Kützing) Kuntze 1898 Schizonema capitatum Kützing 1844

Micromega humile (Kützing) Ralfs in Pritchard 1861, p. 932
Basionym	Schizonema humile Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema humile Kützing 1844

Micromega hydruroides (Kützing) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema hydruroides Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya hydruroides (Kützing) Grunow 1880 Carrodoria hydruroides (hydrurodes) (Kützing) Kuntze 1898 Schizonema hydruroides Kützing 1844

Micromega illyricum (illyrica) (Kützing) Ralfs in Pritchard 1861, p. 934
Basionym	Schizonema illyricum Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya rutilans var. illyrica (Kützing) Grunow 1880 Schizonema illyricum Kützing 1844

Micromega mesogloeoides (Kützing) Ralfs in Pritchard 1861, p. 932
Basionym	Schizonema mesogloeoides (mesogloioides) Kützing 1849
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema mesogloeoides (mesogloioides) Kützing 1849

Micromega minutum (Kützing) Ralfs in Pritchard 1861, p. 934
Basionym	Schizonema minutum Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema minutum Kützing 1844

Micromega mucosum (Kützing) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema mucosum Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema mucosum Kützing 1844

Micromega plumosum (Kützing) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema plumosum Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya rutilans var. plumosa (Kützing) Grunow 1880 Schizonema plumosum Kützing 1844

Micromega trichocephalum (Kützing) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema trichocephalum Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya trichocephala (Kützing) Grunow 1880 Carrodoria trichocephala (Kützing) Kuntze 1898 Schizonema obtusum var. trichocephalum (Kützing) Rabenhorst 1864 Schizonema trichocephalum Kützing 1844

Nitzschia constricta (Kützing) Ralfs in Pritchard 1861, p. 780
Basionym	Synedra constricta Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Synedra constricta Kützing 1844 Tryblionella constricta (Kützing) Poulin in Poulin, Berard-Therriault, Cardinal & Hamilton 1990

Nitzschia curvula (Kützing) Ralfs in Pritchard 1861, p. 782
Basionym	Synedra curvula Kützing 1844
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Synedra curvula Kützing 1844

Nitzschia tergestina (Kützing) Ralfs in Pritchard 1861, p. 781
Basionym	Synedra tergestina Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Synedra tergestina Kützing 1844 Synedra ulna var. tergestina (Kützing) Rabenhorst 1847

Nitzschia vermicularis (Kützing) Ralfs in Pritchard 1861, p. 781
Basionym	Frustulia vermicularis Kützing 1833
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Frustulia vermicularis Kützing 1833 Homoeocladia vermicularis (Kützing; Kützing) Kuntze 1898 Nitzschia vermicularis (Kützing) Hantzsch in Rabenhorst 1848-1860 Sigmatella vermicularis (Kützing) Brébisson & Godey 1835 Synedra vermicularis (Kützing) Kützing 1844 Bacillaria vermicularis (Kützing) Elmore in Barbour 1895

Orthosira americana (Kützing) Ralfs in Pritchard 1861, p. 820
Basionym	Melosira americana Kützing
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Pleurosigma scalpellum (Kützing) Ralfs in Pritchard 1861, p. 917
Basionym	Navicula scalpellum Kützing
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Pleurosigma thuringicum (Kützing) Ralfs in Pritchard 1861, p. 919
Basionym	Navicula thuringica Kützing 1844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma thuringica (Kützing) Rabenhorst 1853 Navicula thuringica Kützing 1844 Pleurosigma angulatum var. thuringicum (Kützing) Schonfeldt 1907 Scalprum (Scalptrum) thuringiacum (Kützing) Kuntze 1891

Podocystis adriatica (Kützing) Ralfs in Pritchard 1861, p. 772
Basionym	Surirella (Suriraya) adriatica Kützing 1844
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Surirella (Suriraya) adriatica Kützing 1844

Micromega parvum (Meneghini in Kutzing) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema parvum Meneghini ex Kutzing 1849
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema parvum Meneghini ex Kutzing 1849

Cerataulus thermalis (Meneghini) Ralfs in Pritchard 1861, p. 847
Basionym	Melosira thermalis Meneghini 1845
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Melosira thermalis Meneghini 1845 Pleurosira thermalis Meneghini 1853

Micromega corinaldi (Meneghini) Ralfs in Pritchard 1861, p. 932
Basionym	Schizonema corinaldi Meneghini 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema corinaldi Meneghini 1853

Micromega nebulosum (Meneghini) Ralfs in Pritchard 1861, p. 930
Basionym	Schizonema nebulosum Meneghini
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Micromega papillosum (Meneghini) Ralfs in Pritchard 1861, p. 932
Basionym	Schizonema papillosum Meneghini 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema papillosum Meneghini 1853

Micromega zanardinii (Meneghini) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema zanardinii Meneghini 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema zanardinii Meneghini 1853

Micromega crispum (Montagne) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema crispum Montagne 1842
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya crispa (Montagne) Grunow 1880 Carrodoria crispa (Montagne) Kuntze 1898 Schizonema crispum Montagne 1842

Micromega investens (Montagne) Ralfs in Pritchard 1861, p. 933
Basionym	Schizonema investiens (investens) Montagne 1842
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema investiens (investens) Montagne 1842

Cymatopleura heterocyma (Naegeli in Kützing) Ralfs in Pritchard 1861, p. 793
Basionym	Surirella heterocyma Naegeli in Kützing 1849
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Surirella heterocyma Naegeli in Kützing 1849

Cymatopleura ovum (Nägeli) Ralfs in Pritchard 1861, p. 793
Basionym	Surirella ovum Naegeli ex Kützing 1849
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cymatopleura ovum (Naegeli in Kutzing) W. Smith 1851 Surirella ovum Naegeli ex Kützing 1849

Navicula cocconeoides (Rabenhorst) Ralfs in Pritchard 1861, p. 909
Basionym	Pinnularia cocconeoides Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula elliptica var. cocconeoides (Rabenhorst) Rabenhorst 1864 Pinnularia cocconeoides Rabenhorst 1853 Diploneis elliptica var. cocconeoides (Rabenhorst) M. Peragallo 1897-1908

Navicula dissimilis (Rabenhorst) Ralfs in Pritchard 1861, p. 893
Basionym	Pinnularia dissimilis Rabenhorst 1853
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia dissimilis Rabenhorst 1853

Navicula garganica (Rabenhorst) Ralfs in Pritchard 1861, p. 901
Basionym	Pinnularia garganica Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia garganica Rabenhorst 1853

Navicula neapolitana (Rabenhorst) Ralfs in Pritchard 1861, p. 910
Basionym	Falcatella neapolitana Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Synedra neapolitana (Rabenhorst) Rabenhorst 1864 Falcatella neapolitana Rabenhorst 1853

Navicula otrantina (Rabenhorst) Ralfs in Pritchard 1861, p. 901
Basionym	Pinnularia otrantina Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia otrantina Rabenhorst 1853

Navicula pachycephala (Rabenhorst) Ralfs in Pritchard 1861, p. 901
Basionym	Pinnularia pachycephala Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia pachycephala Rabenhorst 1853

Navicula romana (Rabenhorst) Ralfs in Pritchard 1861, p. 910
Basionym	Falcatella romana Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Synedra romana (Rabenhorst) Rabenhorst 1864 Falcatella romana Rabenhorst 1853

Nitzschia italica (Rabenhorst) Ralfs in Pritchard 1861, p. 781
Basionym	Sigmatella italica Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia italica (Rabenhorst) Kuntze 1898 Sigmatella italica Rabenhorst 1853

Pleurosigma apulum (Rabenhorst) Ralfs in Pritchard 1861, p. 918
Basionym	Gyrosigma apula Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma apula Rabenhorst 1853

Pleurosigma cuspidatum (Rabenhorst) Ralfs in Pritchard 1861, p. 919
Basionym	Gyrosigma cuspidata Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma cuspidata Rabenhorst 1853 Pleurosigma acuminatum var. cuspidatum (Rabenhorst) Rabenhorst 1864

Stauroneis paucicostata (paucipunctata) (Rabenhorst) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera paucicostata Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula paucicostata (Rabenhorst) Prochazka 1923 Stauroptera paucicostata Rabenhorst 1853

Stauroneis peckii (Rabenhorst) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera peckii Rabenhorst 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula gibba var. peckii (Rabenhorst) Grunow 1860 Pinnularia gibba var. peckii (Rabenhorst) Gutwinski 1891 Pinnularia stauroptera var. peckii (Rabenhorst) F.W. Mills 1934 Stauroptera peckii Rabenhorst 1853 Pinnularia gibba var. peckii (Rabenhorst) Mayer 1913

Stauroneis truncata (Rabenhorst) Ralfs in Pritchard 1861, p. 914
Basionym	Stauroptera truncata Rabenhorst
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Actinocyclus tessellatus (Roper) Ralfs in Pritchard 1861, p. 835
Basionym	Eupodiscus tesselatus Roper 1858
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Roperia tesselata (Roper) Grunow in Van Heurck 1883 Eupodiscus tesselatus Roper 1858 Roperia tesselata (Roper) Grunow ex Pelletan 1889

Actinoptychus splendens (Shadbolt) Ralfs in Pritchard 1861, p. 840
Basionym	Actinophaenia splendens Shadbolt 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinophaenia splendens Shadbolt 1854

Dimeregramma (Dimerogramma) sinuatum (Thwaites in W. Smith) Ralfs in Pritchard 1861, p. 790; pl. 4, fig. 12
Basionym	Denticula sinuata Thwaites in W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Grunowia (Grunovia) sinuata (Thwaites in W. Smith) Rabenhorst 1864 Nitzschia sinuata (Thwaites in W. Smith) Grunow in Cleve & Grunow 1880 Homoeocladia sinuata (Thwaites? ex W. Smith) Kuntze 1898 Odontidium sinuatum (Thwaites in W. Smith) O'Meara 1875 Denticula sinuata Thwaites in W. Smith 1856 Bacillaria sinuata (Thwaites in W. Smith) Elmore in Barbour 1895

Actinocyclus crassus (W. Smith) Ralfs in Pritchard 1861, p. 835
Basionym	Eupodiscus crassus W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinocyclus crassus (W. Smith) Van Heurck 1883 Actinocyclus ehrenbergii var. crassa (W. Smith) Hustedt 1929 Actinocyclus octonarius var. crassus (W. Smith) Hendey 1954 Eupodiscus crassus W. Smith 1853 Actinocyclus octonarius var. crassus (W. Smith) Hajós 1968

Actinocyclus fulvus (W. Smith) Ralfs in Pritchard 1861, p. 835
Basionym	Eupodiscus fulvus W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Auliscus fulvus (W. Smith) Rabenhorst 1864 Eupodiscus fulvus W. Smith 1853

Actinocyclus ralfsii (W. Smith) Ralfs in Pritchard 1861, p. 835; pl. 5, fig. 84
Basionym	Eupodiscus ralfsii W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Actinocyclus ehrenbergii var. ralfsii (W. Smith) Hustedt 1929 Actinocyclus octonarius var. ralfsii (W. Smith) Hendey 1954 Eupodiscus ralfsii W. Smith 1856

Ceratoneis reversa (W. Smith) Ralfs in Pritchard 1861, p. 783
Basionym	Nitzschia reversa W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Nitzschia reversa W. Smith 1853 Nitzschiella reversa (W. Smith) Rabenhorst 1864

Cymatopleura solea var. apiculata (W. Smith) Ralfs in Pritchard 1861, p. 793
Basionym	Cymatopleura apiculata W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cymatopleura apiculata W. Smith 1853 Cymatopleura librile var. apiculata (W. Smith) Descy 1983 Cymatopleura solea var. apiculata (W. Smith) Grunow 1862

Dimeregramma (Dimerogramma) harrisonii (W. Smith) Ralfs in Pritchard 1861, p. 790; pl. 8, fig. 6
Basionym	Odontidium harrisonii Roper 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria harrisonii (W. Smith) Grunow 1862 Nematoplata (Nematoplate) harrisonii (W. Smith) Kuntze 1898 Odontidium harrisonii Roper 1854 Rhaphoneis (Raphoneis) harrisonii (W. Smith) O'Meara 1875 Staurosira harrisonii (Roper; W. Smith) Grunow in Cleve & Moller 1877 Diatoma harrisonii (W. Smith) Cleve 1868

Dimeregramma (Dimerogramma) informe (W. Smith) Ralfs in Pritchard 1861, p. 790
Basionym	Odontidium informe W. Smith 1857
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontidium informe W. Smith 1857

Dimeregramma (Dimerogramma) mutabile (W. Smith) Ralfs in Pritchard 1861, p. 790
Basionym	Odontidium mutabile W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Fragilaria mutabilis (W. Smith) Grunow 1862 Nematoplata mutabilis (W. Smith) Kuntze 1898 Odontidium mutabile W. Smith 1856 Diatoma mutabile (W. Smith) Heiberg 1863 Denticula mutabilis (W. Smith) O'Meara 1875 Staurosira mutabilis (W. Smith) Pfitzer 1871

Dimeregramma (Dimerogramma) tabellaria (W. Smith) Ralfs in Pritchard 1861, p. 790; pl. 4, fig. 35
Basionym	Odontidium tabellaria W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontidium tabellaria W. Smith 1856 Staurosira tabellaria (W. Smith) Leuduger-Fortmoral 1878

Micromega divergens (W. Smith) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema divergens W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema divergens W. Smith 1856

Micromega gracillimum (W. Smith) Ralfs in Pritchard 1861, p. 934
Basionym	Schizonema gracillimum W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Berkeleya parasitica var. gracillima (W. Smith) Grunow 1880 Schizonema gracillimum W. Smith 1856 Schizonema parasiticum var. gracillimum (W. Smith) Rabenhorst 1864 Micromega gracillimum (W. Smith) Crouan frat. 1861

Micromega molle (W. Smith) Ralfs in Pritchard 1861, p. 931
Basionym	Schizonema molle W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula ramosissima var. mollis (W. Smith) Hendey 1964 Schizonema molle W. Smith 1856 Schizonema ramosissimum var. molle (W. Smith) Aleem 1949 Micromega molle (W. Smith) Crouan frat. 1861

Navicula acuminata (W. Smith) Ralfs in Pritchard 1861, p. 909
Basionym	Pinnularia acuminata W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula viridis var. acuminata (W. Smith) M. Peragallo 1903 Pinnularia acuminata W. Smith 1853 Pinnularia viridis var. acuminata (W. Smith) Brun 1880

Navicula directa (W. Smith) Ralfs in Pritchard 1861, p. 906
Basionym	Pinnularia directa W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia directa W. Smith 1853 Navicula directa (W. Smith) Brébisson 1854 Schizonema directum (W. Smith) Kuntze 1898

Navicula distans (W. Smith) Ralfs in Pritchard 1861, p. 907
Basionym	Pinnularia distans W. Smith 1853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia distans W. Smith 1853 Navicula distans (W. Smith) Brébisson 1854 Schizonema distans (W. Smith) Kuntze 1898

Navicula integra (W. Smith) Ralfs in Pritchard 1861, p. 895
Basionym	Pinnularia integra W. Smith 1856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia integra W. Smith 1856 Cymbella integra (W. Smith) Schmidt 1881 Schizonema integrum (W. Smith) Kuntze 1898 Prestauroneis integra (W. Smith) K. Bruder in K. Bruder & L.K. Medlin 2008

Fragilaria seminuda [Ehrenberg] in Ralfs in Pritchard 1861, p. 777
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Aulacodiscus comberi Arnott ex Pritchard 1861, p. 844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus comberi (Arnott ex Pritchard) Kuntze 1898

Aulacodiscus formosus Arnott ex Pritchard 1861, p. 843
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus formosus (Arnott ex Pritchard) Kuntze 1898

Aulacodiscus johnsonii Arnott ex Pritchard 1861, p. 844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Aulacodiscus kittonii var. johnsonii (Arnott ex Pritchard) Rattray 1888

Auliscus ovalis Arnott ex Pritchard 1861, p. 846
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Aulacodiscus kittonii Arnott ex Ralfs in Pritchard 1861, p. 844; pl. 8, fig. 24 ‘kittoni’
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Aulacodiscus laevis Brightwell 1860 Tripodiscus kittonii (Arnott ex Ralfs in Pritchard) Kuntze 1898

Cyclotella rectangula Brébisson [ex Rabenhorst] according to Ralfs in Pritchard 1861, p. 811 & 938; pl. 5, fig. 54
Status	Valid
Comments	Just a citation, not a new taxon.
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cyclotella meneghiniana var. rectangulata (rectangula) Brebisson in Pritchard Grunow in Van Heurck 1882 Cyclotella operculata f. rectangula Kützing according to Mills 1934 Cyclotella operculata var. rectangula Kützing 1849 Cyclotella rectangula Brébisson ex Rabenhorst 1853 Cyclotella rectangula Brébisson in litt. ex Kützing 1849 Cyclotella operculata var. rectangulata Kützing according to Mills 1934

Navicula ordinata Brébisson ex Ralfs in Pritchard 1861, p. 901
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Aulacodiscus boliviensis Brébisson manuscript in Pritchard 1861, p. 843
Status	Invalid
Comments	Cited in syn. Aulacodiscus formosus Arnott
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Triceratium compactum Brightwell ex Ralfs in Pritchard 1861, p. 853
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Triceratium spinosum var. compacta (Brightwell ex Ralfs in Pritchard) M. Peragallo 1903

Cymbella dianae Ehrenberg Ralfs in Pritchard 1861, p. 877
Basionym	Cocconema dianae Ehrenberg 1854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cocconema dianae Ehrenberg 1854

Eunotia demerarae Ehrenberg ex Pritchard 1861, p. 764
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Amphicampa mirabilis Ehrenberg ex Ralfs in Pritchard 1861, p. 765; pl. 4, fig. 5
Status	Valid
Comments	Synonym: Eunotia mirifica Ehrenberg 1854
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Arthrogyra guatimalensis Ehrenberg ex Ralfs in Pritchard 1861, p. 822
Comments	Illustrated in Ehrenberg 1854, pl. 33/6, fig. 1 (ref. 000966)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Arthrogyra semilunaris Ehrenberg ex Ralfs in Pritchard 1861, p. 822
Status	Valid
Comments	Illustration in Ehrenberg 1854, pl. 33/6, fig. 2 (ref. 000966)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Eunotia columbi Ehrenberg ex Ralfs in Pritchard 1861, p. 764
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Surirella uralensis Ehrenberg ex Ralfs in Pritchard 1861, p. 798
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Synedra striata Ehrenberg ex Ralfs in Pritchard 1861, p. 789
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Tabellaria bacillum Ehrenberg ex Ralfs in Pritchard 1861, p. 807
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Striatella bacillum (Ehrenberg ex Ralfs in Pritchard) Kuntze 1898

Eunotia apiculata Ehrenberg in Pritchard 1861, p. 764
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Gaillonella undata Ehrenberg in Ralfs in Prichard 1861, p. 822 'Gallionella'
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Achnanthes obtusa Ehrenberg in Ralfs in Pritchard 1861, p. 875
Comments	Nomen nudum
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Ceratoneis rhomboides Ehrenberg in Ralfs in Pritchard 1861, p. 783 as C. rhomboides (E.)
Status	Invalid
Comments	Nomen nudum. Error for Ceratoneis rhomboidea Ehrenberg (a nomen nudum)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Ceratoneis rhomboidea Ehrenberg 1854

Cocconeis brasiliensis Ehrenberg in Ralfs in Pritchard 1861, p. 872 as C. brasiliensis (E.)
Status	Invalid
Comments	Nomen nudum. Could be a new comb., but no likely candidates found among Ehrenberg's species
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Cocconeis turgida Ehrenberg in Ralfs in Pritchard 1861 as C. turgida (E.)
Status	Invalid
Comments	Nomen nudum. Could be a new comb., but no likely candidates found among Ehrenberg's species
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Navicula obliqua Ehrenberg in Ralfs in Pritchard 1861, p. 911
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Pinnularia ambigua Ehrenberg in Ralfs in Pritchard 1861, p. 911
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Pinnularia phenana Ehrenberg in Ralfs in Pritchard 1861, p. 911
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stauroneis aethiopica Ehrenberg in Ralfs in Pritchard 1861, p. 915
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stauroneis decurrens Ehrenberg in Ralfs in Pritchard 1861, p. 915
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stauroneis sphaerophoron Ehrenberg in Ralfs in Pritchard 1861, p. 915
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stauroptera nobilis Ehrenberg in Ralfs in Pritchard 1861, p. 915
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Synedra curvata Ehrenberg in Ralfs in Pritchard 1861, p. 789
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Tetragramma asiatica Ehrenberg in Ralfs in Pritchard 1861, p. 859
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Xanthiopyxis lacera Forti in Tempère & Peragallo 1861, p. 197
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Campylodiscus concinnus Greville ex Ralfs in Pritchard 1861, p. 800
Comments	New name for Campylodiscus marginatus Johnston 1860, non Ehrenberg 1845
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Campylodiscus concinnus Greville 1860 Campylodiscus hodgsonii var. concinnus (Greville) Rabenhorst 1864 Campylodiscus marginatus Johnston 1860

Coscinodiscus excavatus Greville manuscript, Ralfs in Pritchard 1861, p. 829; pl. 8, fig. 26
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Campylodiscus normanicus 'Greville' Ralfs in Pritchard 1861, p. 800
Comments	Error for Campylodiscus normanianus Greville 1860.
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Campylodiscus normanianus Greville 1860 Campylodiscus wallichianus var. normanicus (Greville) De Toni 1892 Campylodiscus wallichianus var. normanianus (Greville) De Toni 1892

Exilaria truncata Greville, Ralfs in Pritchard 1861, p. 789
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Exilaria truncata Greville, Ralfs in Pritchard 1861, p. 789
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Grammatophora subtilissima J.W. Bailey ex Ralfs in Pritchard 1861, p. 809
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Triceratium trisulcum J.W. Bailey ex Ralfs in Pritchard 1861, p. 854; pl. 8, fig. 27
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biddulphia trisulca (J.W. Bailey ex Ralfs in Pritchard) Boyer 1900

Porpeia quadriceps J.W. Bailey in litt. Ralfs in Pritchard 1861, p. 850; pl. 6, fig. 6
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Amphipentas flexuosa J.W. Bailey in Ralfs in Pritchard 1861, p. 858; pl. 6, fig. 22
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Euodia gibba J.W. Bailey, Ralfs in Pritchard 1861, p. 852; pl. 8, fig. 22
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Hemidiscus cuneiformis f. gibba (J.W. Bailey ms., Ralfs in Pritchard) Hustedt 1940 Hemidiscus cuneiformis var. gibba (J.W. Bailey MS., Ralfs in Pritchard) Hustedt 1930

Aulacodiscus beeveriae Johnson ex Pritchard 1861, p. 844; pl. 6, fig. 5
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus beeveriae (Johnson ex Pritchard) Kuntze 1898

Eupodiscus peruvianus Kitton ex Ralfs in Pritchard 1861, p. 938
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Auliscus peruvianus (Kitton ex Pritchard) Greville 1862 Pseudoauliscus (Pseudauliscus) peruvianus (Kitton ex Pritchard) Schmidt in Schmidt et al. 1875

Triceratium crenatum Kitton ex Ralfs in Pritchard 1861, p. 939
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Nitzschia brightwellii Kitton in Pritchard 1861, p. 780; pl. 8, fig. 7
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Homoeocladia brightwellii (Kitton ex Pritchard) Kuntze 1898 Tryblionella brightwellii (Kitton in Pritchard) Mann in Round, Crawford & Mann 1990

Amphitetras crucifera Kitton in Ralfs in Pritchard 1861, p. 858
Status	Valid
Comments	Also in Kitton 1867, p. 271, fig. 205 (ref. 000566)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Triceratium cruciferum (Kitton) Grunow in Van Heurck 1883 Perissonoe crucifera (Kitton in Pritchard) Desikachary, Gowthaman, Hema, Prasad & Prema 1987 Rhaphoneis amphiceros var. crucifera (Kitton) Wood 1961 Rhaphoneis crucifera (Kitton) Hagelstein 1939

Aulacodiscus brownei Norman ex Pritchard 1861, p. 844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus brownei (Norman ex Pritchard) Kuntze 1898

Hyalosira beswickii Norman ex Ralfs in Pritchard 1861, p. 804
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Striatella beswickii (Norman in Pritchard) De Toni 1892

Pleurosigma acutum Norman ex Ralfs in Pritchard 1861, p. 920
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Scalprum (Scalptrum) acutum (Norman ex Ralfs in Pritchard) Kuntze 1891

Rhizosolenia robusta Norman ex Ralfs in Pritchard 1861, p. 866; pl. 8, fig. 42
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Calyptrella robusta (Norman) Hernandez-Becerril & Meave 1996 Neocalyptrella robusta (Norman) Hernandez-Becerril et Meave 1997

Toxonidea undulata Norman ex Ralfs in Pritchard 1861, p. 920; pl. 8, fig. 46
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Toxonidea insignis var. undulata (Norman ex Ralfs in Pritchard) Cleve 1894

Aulacodiscus pulcher Norman in Pritchard 1861, p. 845; pl. 8, fig. 28
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus pulcher (Norman ex Pritchard) Kuntze 1898

Biddulphia macdonaldii Norman in Pritchard 1861, p. 849; pl. 8, fig. 23
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontella macdonaldii (Norman in Pritchard) Grunow 1884 Denticella macdonaldii (Norman in Pritchard) Grunow 1884

Navicula bullata Norman in Ralfs in Pritchard 1861, p. 938
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Asterodiscus johnsoni Ralfs 1861, p. 839
Status		illegitimate
Comments	Composite species: includes A. quinarius, A. senarius & A. nonarius of Johnson 1852
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	uncertain/not verified

Excentron cancroides Ralfs in litt., Ralfs in Pritchard 1861, p. 837
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Achnanthidium trinode Ralfs in Pritchard 1861, p. 872
Status	Valid
Comments	New name for Navicula trinodis W. Smith 1856, non Navicula trinodis Ehrenberg 1838
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Achnanthes trinodis (Ralfs in Pritchard) Grunow in Van Heurck 1880 Achnanthes trinodis (Ralfs in Pritchard) Cleve 1895 Navicula laevissima var. trinodis (W. Smith) Brun 1880 Navicula trinodis W. Smith 1856 Microneis trinodis (Ralfs) Meister 1912

Actinocyclus acharneus Ralfs in Pritchard 1861, p. 834
Status	Invalid
Comments	Nomen in syn. A. ehrenbergii Ralfs. Err. cit. pro A. acharnâr Ehrenberg
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Actinocyclus astrolites Ralfs in Pritchard 1861, p. 835
Status	Invalid
Comments	Nomen in syn. A. ehrenbergii Ralfs. Err. cit. pro A. astroites Ehrenberg 1845
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Actinocyclus bet-el-gose Ralfs in Pritchard 1861, p. 834
Status	Invalid
Comments	Nomen in syn. A. ehrenbergii Ralfs. Err. cit. pro A. betegose Ehrenberg 1845
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Actinocyclus ehrenbergii Ralfs in Pritchard 1861, p. 834
Status	Valid	illegitimate
Comments	Ralfs states: “Under this name we include all Ehrenberg’s species with rays composed of double lines.” Actinocyclus octonarius Ehr. 1837 should have been retained by Ralfs.
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Actinocyclus moniliformis Ralfs in Pritchard 1861, p. 834
Status	Valid
Comments	Cited synonym: A. ternarius Ehr. 1854, pl. 22, fig. 9 (ref. 000966)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Actinocyclus omphus Ralfs in Pritchard 1861, p. 835
Status	Invalid
Comments	Nomen in syn. A. ehrenbergii Ralfs. Err. cit. pro A. omphax Ehrenberg 1845
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Actinoptychus elegans Ralfs in Pritchard 1861, p. 840
Status	Valid
Comments	Described by Ralfs as a new species. Ralfs indicates that it is synonymous in part with Actinoptychus octodenarius Ehrenberg 1854 (“= A. octodenarius EM, pl. 21, fig. 21”)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Amphora gregorii Ralfs in Pritchard 1861, p. 883
Status	Valid
Comments	New name for A. quadrata Gregory 1857, non Bréb. ex Kützing 1844
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Amphora quadrata Gregory 1857

Aulacodiscus barbadensis Ralfs in Pritchard 1861, p. 939
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus barbadensis (Ralfs in Pritchard) Kuntze 1898

Aulacodiscus margaritaceus Ralfs in Pritchard 1861, p. 844
Status	Valid
Comments	Based on A. crux sensu Ehrenberg 1854, non A. crux Ehrenberg 1844
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus margaritaceus (Ralfs in Pritchard) Kuntze 1898

Aulacodiscus scaber Ralfs in Pritchard 1861, p. 844
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Tripodiscus scaber (Ralfs in Pritchard) Kuntze 1898

Bacillaria naegeli Ralfs in Pritchard 1861, p. 955 (expl. pl. 15, fig. 28) ‘nägeli’
Status	Valid
Comments	As Melosira nägeli Ralfs in text p. 822
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Bacteriastrum wallichii Ralfs in Pritchard 1861, p. 863; pl. 6, fig. 27
Status	Valid
Comments	New name for Chaetoceros bacteriastrum Wallich 1860
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Chaetoceros bacteriastrum Wallich 1860

Campylodiscus ehrenbergii Ralfs in Pritchard 1861, p. 802; pl. 12, fig. 12-13, 22, 23
Status	Valid
Comments	New name for Surirella campylodiscus Ehrenberg 1843
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Surirella campylodiscus Ehrenberg 1843

Campylodiscus ovatus Ralfs in Pritchard 1861, p. 802
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Cerataulus smithii Ralfs in Pritchard 1861, p. 847
Status	Valid
Comments	New name for Eupodiscus radiatus Smith 1853, not Bailey 1851
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Odontella smithii (Ralfs in Pritchard) M. Peragallo 1903 Biddulphia radiata (W. Smith) Roper 1859 Biddulphia smithii (Ralfs in Pritchard) Van Heurck 1885 Eupodiscus radiatus W. Smith 1853

Chaetoceros confervoides Ralfs in Pritchard 1861, p. 862
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Craspedodiscus barbadensis Ralfs in Pritchard 1861, p. 939
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Cymbella gregorii Ralfs in Pritchard 1861, p. 876
Status	Valid
Comments	New name for Cymbella truncata Gregory 1855, non Rabenhorst 1853
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Cymbella affinis var. truncata Grunow in Van Heurck 1882-1885 Cymbella truncata Gregory 1855

Donkinia angusta Ralfs in Pritchard 1861, p. 920
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Donkinia reticulata Ralfs in Pritchard 1861, p. 921
Status	Valid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Pleurosigma reticulatum (Norman ex Ralfs in Pritchard) Hustedt 1955

Eunotia ehrenbergii Ralfs in Pritchard 1861, p. 764
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Himantidium ehrenbergii (Ralfs in Pritchard) Lagerstedt 1873

Eunotia robusta Ralfs in Pritchard 1861, p. 763
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Himantidium robustum (Pritchard) Heiberg 1863 Eunotia robusta (Ralfs in Pritchard) Cleve-Euler 1953

Eunotia terra Ralfs in Pritchard 1861, p. 764
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Euodia brightwellii Ralfs in Pritchard 1861, p. 852
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Eupodiscus grevillii Ralfs in Pritchard 1861, p. 938
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Melosira granulata var. maxima Ralfs in Pritchard 1861, p. 820
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Melosira naegeli Ralfs in Pritchard 1861, p. 822; pl. 15, fig. 26-27
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Lysigonium naegelii (Ralfs) Kuntze 1891

Micromega kuetzingii Ralfs in Pritchard 1861, p. 933
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Micromega meneghinii Ralfs in Pritchard 1861, p. 933
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Schizonema meneghinii (Ralfs in Pritchard) Rabenhorst 1864

Navicula anglica Ralfs in Pritchard 1861, p. 900
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula anglica f. major (Ralfs in Pritchard) Cleve-Euler 1932 Navicula placentula var. anglica (Ralfs in Pritchard) Grunow in Cleve & Grunow 1880 Navicula tumida var. anglica (Ralfs in Pritchard) Gutwinski 1891 Placoneis anglica (Ralfs in Pritchard) R. Lowe in J.R. Johansen et al. 2004 Placoneis anglica (Ralfs in Pritchard) Cox 2003

Navicula extensa Ralfs in Pritchard 1861, p. 903
Status	?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Navicula gregorii Ralfs in Pritchard 1861, p. 901
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pinnularia gregorii (Ralfs in Pritchard) Rabenhorst 1864 Navicula retusa var. gregorii (Ralfs in Pritchard) R. Ross in Hartley 1986

Navicula hebes Ralfs in Pritchard 1861, p. 896
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Caloneis hebes (Ralfs) Patrick 1966

Navicula marina Ralfs in Pritchard 1861, p. 903
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Petroneis marina (Ralfs in Pritchard) Mann in Round, Crawford & Mann 1990

Navicula oceanica Ralfs in Pritchard 1861, p. 910
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Navicula parvula Ralfs in Pritchard 1861, p. 908
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Navicula producta Ralfs in Pritchard 1861, p. 903
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Navicula decussata Ehrenberg 1844

Navicula rabenhorstii Ralfs in Pritchard 1861, p. 899
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Navicula undulata Ralfs in Pritchard 1861, p. 895
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Nitzschia ehrenbergii Ralfs in Pritchard 1861, p. 782
Status	Invalid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	uncertain/not verified

Nitzschia smithii Ralfs in Pritchard 1861, p. 781
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Nitzschia insignis var. smithii (Ralfs in Pritchard) Grunow in Van Heurck 1881 Homoeocladia smithii (Ralfs in Pritchard) Kuntze 1898 Pritchardia smithii (Ralfs in Pritchard) Rabenhorst 1864

Plagiogramma grevillii Ralfs in Pritchard 1861, p. 774
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	L
Collector		Assessment of record accuracy	likely accurate

Pleurosigma normanii Ralfs in Pritchard 1861, p. 919
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Gyrosigma normanii (Ralfs in Pritchard) Mann 1907 Scalprum (Scalptrum) normanii (Ralfs in Pritchard) Kuntze 1891

Pyxidicula globata Ralfs in Pritchard 1861, p. 825; pl. 17, figs. 506-509
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Rhabdonema crozieri (crozierii) Ralfs in Pritchard 1861, p. 805; pl. 4, fig. 43
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Stauroneis ehrenbergii Ralfs in Pritchard 1861, p. 912
Status	Valid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Stauroneis gregorii Ralfs in Pritchard 1861, p. 913
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Stauroneis rabenhorstii Ralfs in Pritchard 1861, p. 911
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Surirella folium Ralfs in Pritchard 1861, p. 796
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Surirella smithii Ralfs in Pritchard 1861, p. 794
Status	Valid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Surirella splendida Ralfs in Pritchard 1861, p. 795
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Synedra gibbosa Ralfs in Pritchard 1861, p. 786
Status	Valid
Comments	New name for Navicula arcus Ehrenberg 1836 (priority for Synedra arcus Kützing 1844)
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Ceratoneis arcus (Ehrenberg) Kützing 1844 Fragilaria arcus (Ehrenberg) Cleve 1898 Navicula arcus Ehrenberg 1836 Hannaea arcus (Ehrenberg) Patrick 1961 Cymbella arcus (Ehrenberg) Hassall 1845

Synedra lineata Ralfs in Pritchard 1861, p. 789
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Synedra pachycephala Ralfs in Pritchard 1861, p. 786
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Synedra pulchella var. smithii Ralfs in Pritchard 1861, p. 786
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Synedra robusta Ralfs in Pritchard 1861, p. 789; pl. 8, fig. 3
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Ardissonea robusta (Ralfs in Pritchard) De Notaris in De Notaris & Baglietto 1871 Synedra superba var. robusta (Ralfs in Pritchard) Grunow 1862

Synedra smithii Ralfs in Pritchard 1861, p. 786
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Ctenophora pulchella var. smithii (Ralfs in Pritchard) Schonfeldt 1907 Synedra pulchella (Ralfs in Pritchard) Van Heurck 1881

Synedra truncata Ralfs in Pritchard 1861, p. 789
Status	Valid?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Triceratium americanum Ralfs in Pritchard 1861, p. 855 'americana'
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Biddulphia americana (Ralfs in Pritchard) Boyer 1900

Triceratium bowerbankiana Ralfs in Pritchard 1861, p. 939
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Triceratium johnsoni Ralfs in Pritchard 1861, p. 854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Triceratium margaritaceum Ralfs in Pritchard 1861, p. 855
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Triceratium umbilicatum Ralfs in Pritchard 1861, p. 854
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate

Triceratium wallichii Ralfs in Pritchard 1861, p. 856
Status	Valid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Type Locality		Language of description	E
Collector		Assessment of record accuracy	likely accurate
List of nomenclatural synonyms	Pseudotriceratium wallichii (Ralfs in Pritchard) Simonsen 1979

Aulacodiscus brightwellii Ralfs ms. in Pritchard 1861, p. 843
Status	Invalid
Comments	Cited in syn. Aulacodiscus formosus Arnott
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		Click here to view INA card. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	likely accurate

Cymatopleura elliptica var. torta Tempère & Peragallo 1861, p. 428 439; Nos. 884, 903
Status	?
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified

Diadesmis peregrina W. Smith & Ralfs in Pritchard 1861, p. 923
Status	Invalid
Published in	Pritchard, A. 1861 [ref. 001063]. A history of infusoria, living and fossil: arranged according to Die infusionsthierchen of C.G. Ehrenberg; containing colored engravings, illustrative of all the genera, and descriptions of all the species in that work, with several new ones; to which is appended an account of those recently discovered in the chalk formations. xii. Edition IV, revised and enlarged by J.T. Arlidge, W. Archer, J. Ralfs, W.C. Williamson and the author. London, Whittaker and Co., 1861. xiii + 968 pp., 40 pls.
Type		INA card not found. Click here to check this name in the INA website.
Collector		Assessment of record accuracy	uncertain/not verified
List of nomenclatural synonyms	Navicula confervacea var. peregrina (W. Smith ex Ralfs in Pritchard) Grunow Diadesmis confervacea var. peregrina (W. Smith ex Ralfs in Pritchard) Cleve & Möller 1878

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