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CAS 51558 Afromastacembelus sexdecimspinus Roberts [T. R.] & Travers [R. A.], 1986 Holotype  [Collection database record]
sexdecimspinus, Afromastacembelus Roberts [T. R.] & Travers [R. A.] 1986:107, Figs. 1-5 [Cybium v. 10 (no. 2); ref. 6759] High gradient rapids of Cross River, near Widekum, Cameroon. Holotype: CAS 51558. Paratypes: BMNH 1985.10.4.1-2 (2); CAS 51559-60 (2, 1); MRAC 84-04-P-1 (1); MNHN 1986-0396 (1). •Valid as Aethiomastacembelus sexdecimspinus (Roberts & Travers 1986) -- (Travers in Lévêque et al. 1992:851 [ref. 21590], Travers 1992:337 [ref. 14258], Vreven 2004:102 [ref. 27762]). •Valid as Mastacembelus sexdecimspinus (Roberts & Travers 1986) -- (Vreven 2007:555 [ref. 30080], Roberts 2021:74 [ref. 38074]). Current status: Valid as Mastacembelus sexdecimspinus (Roberts & Travers 1986). Mastacembelidae. Distribution: West-central Africa: Cameroon. Habitat: freshwater.
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© 2001 California Academy of Sciences

SU 33016 Mastacembelus keithi Herre [A. W. C. T.], 1940 Holotype  [Collection database record]
keithi, Mastacembelus Herre [A. W. C. T.] 1940:24, Pl. 19 [Bulletin of the Raffles Museum No. 16; ref. 2130] Brook flowing into Segaliud River, Borneo, Malaysia. Holotype: CAS-SU 33016. Paratypes: (8) BMNH 1938.12.1.267 [from Herre] (1), FMNH 51536 (1), CAS-SU 33017 (orig. 8). Type catalog: Böhlke 1953:143 [ref. 12291], Ibarra & Stewart 1987:55 [ref. 12367]. •Valid as Macrognathus keithi (Herre 1940) -- (Travers 1984:144 [ref. 5147], Kottelat et al. 1993:167 [ref. 23448], Kottelat & Lim 1996:249 [ref. 23210], Martin-Smith & Tan 1998:593 [ref. 23647], Parenti & Lim 2005:193 [ref. 28285], Kottelat 2013:311 [ref. 32989], Sulaiman et al. 2018:36 [ref. 35802], Ng & Tan 2020:175 [ref. 37671]). Current status: Valid as Macrognathus keithi (Herre 1940). Mastacembelidae. Distribution: Borneo (Sabah and North Borneo). Habitat: freshwater.
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© 2001 California Academy of Sciences

SU 39403 Mastacembelus notophthalmus Roberts [T. R.], 1989 Holotype  [Collection database record]
notophthalmus, Mastacembelus Roberts [T. R.] 1989:181 [Memoirs of the California Academy of Sciences No. 14; ref. 6439] Tapah Fisheries Station, Perak, Malaysia. Holotype: CAS-SU 39403. Paratypes: CAS 49497 (1); MZB 3948-50 (1, 1, 1); CAS-SU 35660 (3), 39402 (1), 39404 (11), 39406 (1). •Valid as Mastacembelus notophthalmus Roberts 1989 -- (Kottelat et al. 1993:168 [ref. 23448], Britz 2007:257 [ref. 29343], Kottelat 2013:313 [ref. 32989], Ng et al. 2019:533 [ref. 36606], Ng & Tan 2020:176 [ref. 37671], Hasan et al. 2023:[2] 190 [ref. 40108]). Current status: Valid as Mastacembelus notophthalmus Roberts 1989. Mastacembelidae. Distribution: Southeast Asia: Malaya (Malaysia), Sumatra, Bangka and Belitung (Indonesia). Habitat: freshwater.
Not Illustrated
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© 2001 California Academy of Sciences

SU 30972 Mastacembelus perakensis Myers [G. S.], 1937 Holotype  [Collection database record]
perakensis, Mastacembelus Myers [G. S.] in Herre & Myers 1937:74, Pl. 7 [Bulletin of the Raffles Museum No. 13; ref. 2123] Bukit Merah Reservoir, Krian District, Perak, Malaysia. Holotype: CAS-SU 30972. Paratypes: USNM 101189 (1). Type catalog: Böhlke 1953:143 [ref. 12291]. From the text, authorship of the freshwater part was by Herre and Myers, but this is in conflict with a statement on p. 53 that the descriptive matter is the work of the senior author excepting in Danio, Encheloclarias, and Mastacembelus. The latter statement is accepted for purposes of authorship of this taxon. •Valid as Macrognathus perakensis (Myers 1937) -- (Travers 1984:144 [ref. 5147], Kottelat 2013:312 [ref. 32989]). •Synonym of Mastacembelus maculatus Cuvier 1832 -- (Roberts 1989:181 [ref. 6439]). •Synonym of Macrognathus maculatus (Cuvier 1832) -- (Ng et al. 2019:533 [ref. 36606], Ng & Tan 2020:174 [ref. 37671]). Current status: Synonym of Macrognathus maculatus (Cuvier 1832). Mastacembelidae. Habitat: freshwater.
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© 2001 California Academy of Sciences