aterrimus, Hymenocephalus Gilbert [C. H.] 1905:666, Pl. 93 [Bulletin of the U. S. Fish Commission v. 23 (pt 2) [for 1903]; ref. 1631] Off Kauai Island, Hawaiian Islands, Albatross station 3810 [or 3989], depth 385-500 fathoms. Holotype: USNM 51649. Paratypes: FMNH 55952 (1), CAS-SU 8513 (4), USNM 51677-78 (15, 4). Type catalog: Böhlke 1953:58 [ref. 12291], Ibarra & Stewart 1987:47 [ref. 12367]. See also Pequeño 1997:82 [ref. 23536] •Valid as Hymenocephalus aterrimus Gilbert 1905 -- (Iwamoto in Cohen et al. 1990:230 [ref. 18936], Iwamoto & Merrett 1997:516 [ref. 23710], McEachran & Fechhelm 1998:782 [ref. 23897], Iwamoto 1999:1991 [ref. 24761], Merrett & Iwamoto 2000:757 [ref. 25037], Iwamoto & Graham 2001:473 [ref. 25637], Iwamoto 2003:987 [ref. 27010], Mundy 2005:252 [ref. 28379], Bray et al. 2006:595 [ref. 29065], Melo et al. 2010:35 [ref. 30775] as cf. aterrimus, Fricke et al. 2011:364 [ref. 31242], McMillan & Iwamoto 2014:132 [ref. 33462] as cf. aterrimus, Schwarzhans 2014:33 [ref. 33586], Lins Oliveira et al. 2015:90 [ref. 37485], Robertson et al. 2020:158 [ref. 38098], Page et al. 2023:101 [ref. 40505]). Current status: Valid as Hymenocephalus aterrimus Gilbert 1905. Macrouridae. Distribution: Circumglobal in tropical through temperate seas (including Caribbean Sea), except not in eastern Pacific. Habitat: marine.