Species that contain: Halosauropsis and macrochir [ 3 ] records

goodei, Halosaurus Gill [T. N.] 1883:257 [Proceedings of the United States National Museum v. 6 (no. 380); ref. 1724] Off east coast of U.S.A., 38°53'00"N, 69°23'30"W, Albatross station 2037, depth 1731 fathoms. Lectotype: USNM 33281. Paralectotypes: CAS-SU 9466 [ex USNM 33338] (1); USNM 33312 (now 4), 33329 (orig. 10, now 6), 33336 (3), 33338 (orig. 10, now 8). Type catalog: Böhlke 1953:51 [ref. 12291], Smith 1994:40-41 [ref. 21917]. Lectotype established by Jordan & Evermann 1896:609-610 [ref. 2443]. •Synonym of Halosauropsis macrochir (Günther 1878) -- (McDowell 1973:86 [ref. 24539], Harrisson 1973:254 [ref. 7189], Sulak 1990:129 [ref. 19326]). Current status: Synonym of Halosauropsis macrochir (Günther 1878). Halosauridae. Habitat: marine.

macrochir, Halosaurus Günther [A.] 1878:251 [23] [Annals and Magazine of Natural History (Series 5) v. 2 (nos 7/8/9)(art. 2/22/28); ref. 2010] Off Strait of Gibraltar, Challenger station 5, depth 1090 fathoms. Lectotype: BMNH 1887.12.7.237. Paralectotypes: BMNH 1887.12.7.238-241 (4) Challenger station 146. On p. 23 of separate. See also Günther 1887:237, Pl. 59 (fig. A) [ref. 2013]. Grey 1956:155 [ref. 19262] designated a "type locality" corresponding to the figured specimen; Paxton et al. 1989:147 [ref. 12442] regarded the action of Grey as establishing a lectotype; lectotype designation technically probably dates to Paxton et al. 1989. •Valid as Halosauropsis macrochir (Günther 1878) -- (McDowell 1973:78 [ref. 24539], Harrisson 1973:254 [ref. 7189], Sulak in Whitehead et al. 1986:595 [ref. 13676], Sulak 1986:197 [ref. 5720], Machida et al. 1988:78 [ref. 6623], Paxton et al. 1989:147 [ref. 12442], Paulin et al. 1989:65 [ref. 24556], Shcherbachev et al. 1989:166, 169 [ref. 36134], Sulak 1990:129 [ref. 19326], Gon 1990:98 [ref. 21680], Gomon et al. 1994:216 [ref. 22532], Shinohara et al. 1996:154 [ref. 26605], Santos et al. 1997:17 [ref. 23531], Fricke 1999:36 [ref. 24106], Pakhorukov 2001:377 [ref. 25409], Hutchins 2001:18 [ref. 25847], Nakabo 2002:190 [ref. 26001], Smith 2003:686 [ref. 26989], Moore et al. 2003:172 [ref. 27076], Shinohara et al. 2005:399 [ref. 28370], Duhamel et al. 2005:84 [ref. 32059], Paxton et al. 2006:230 [ref. 28995], Smith 2008:184 [ref. 30621], Shelyagin 2010:512 [ref. 31017], Stewart & Struthers 2015:208 [ref. 34231], Bañón et al. 2016:303 [ref. 34397], Smith 2016:1598 [ref. 34556], Bañón et al. 2016:475 [ref. 34875], Fricke et al. 2018:30 [ref. 35805], Williams et al. 2018:99 [ref. 36359], Carneiro et al. 2019:56 [ref. 37250], Fricke et al. 2019:50 [ref. 36673], Bañón & Maño 2021:48 [ref. 38883], Koeda et al. 2021:5 [ref. 38857], Page et al. 2023:50 [ref. 40505]). Current status: Valid as Halosauropsis macrochir (Günther 1878). Halosauridae. Distribution: Circumglobal in tropical seas, but absent from southwestern Pacific. Habitat: marine.

niger, Halosaurus Gilchrist [J. D. F.] 1906:170, Pl. 51 [Marine Investigations in South Africa v. 4; ref. 1647] Off Cape Point, South Africa, depth 800-930 fathoms. Syntypes: (4) ?BMNH 1905.9.29.10 [or 40] (1); SAM 12907 (1), ?12908 (1 or 2), 12909 (1). •Synonym of Halosauropsis macrochir (Günther 1878) -- (McDowell 1973:87 [ref. 24539], Harrisson 1973:255 [ref. 7189], Sulak 1986:197 [ref. 5720], Sulak 1990:130 [ref. 19326]). Current status: Synonym of Halosauropsis macrochir (Günther 1878). Halosauridae. Habitat: marine.