holotrachys, Macrurus Günther [A.] 1878:24 [8] [Annals and Magazine of Natural History (Series 5) v. 2 (nos 7/8/9)(art. 2/22/28); ref. 2010] East of Rio de la Plata mouth, Challenger station 320, depth 600 fathoms. Holotype (unique): BMNH 1887.12.7.87. On p. 8 of separate. See also Günther 1887:136, Pl. 28 (fig. B) [ref. 2013]. Original genus should have been Macrourus. See Iwamoto et al. 2004:202 [ref. 27643]. •Valid as Coryphaenoides holotrachys (Günther 1878) -- (Nakamura in Nakamura et al. 1986:134 [ref. 14235]). •Valid as Macrourus holotrachys Günther 1878 -- (Trunov 1986:29 [ref. 24543], Trunov & Konstantinov 1986:127 [ref. 24541], Iwamoto 1986:336 [ref. 5674], Arai in Amaoka et al. 1990:180 [ref. 16024], Iwamoto 1990:203 [ref. 21688], Iwamoto in Cohen et al. 1990:237 [ref. 18936], Trunov & Konstantinov 1990:50 [ref. 22872], Ruiz R. & Oyarzún G. 1993:57 [ref. 22359], Bianchi & Carpenter in Bianchi et al. 1993:143 [ref. 25472], Ruiz et al. 1995:125 [ref. 23252], López et al. 1996:34 [ref. 23681], Pequeño 1997:82 [ref. 23536], McMillan et al. 2012:15 [ref. 31767], McMillan & Iwamoto 2015:815 [ref. 34263], Nión et al. 2016:39 [ref. 35565] with author as (Günther 1878), Arana et al. 2020:315 [ref. 41264], Gon et al. 2021:108 [ref. 38049], Kim et al. 2021:80 [ref. 39117]). Current status: Valid as Macrourus holotrachys Günther 1878. Macrouridae. Distribution: Circumglobal in temperate and Subantarctic waters of the Southern Hemisphere. Habitat: marine.