hypomelas, Stemonidium Gilbert [C. H.] 1905:586, Pl. 67 [Bulletin of the U. S. Fish Commission v. 23 (pt 2) [for 1903]; ref. 1631] Off Niihau Island, Kawahioa Point, Hawaiian Islands, Albatross station 4176, depth 537-672 fathoms. Holotype (unique): USNM 51550. Type catalog: Smith 1994:37 [ref. 21917]. •Valid as Stemonidium hypomelas Gilbert 1905 -- (Clarke 1984:249 [ref. 6814], Asano in Masuda et al. 1984:30 [ref. 6441], Tighe 1989:625 [ref. 13291], Saldanha & Karmovskaya 1990:171 [ref. 13615], Smith 1999:1692 [ref. 24661], Nakabo 2000:238 [ref. 25086], Nakabo 2002:238 [ref. 26001], Figueiredo et al. in Menezes et al. 2003:38 [ref. 27192], Smith 2003:756 [ref. 26989], Shinohara et al. 2005:402 [ref. 28370], Mundy 2005:144 [ref. 28379], Melo et al. 2009:12 [ref. 30460], Fricke et al. 2011:354 [ref. 31242], Lins Oliveira et al. 2015:53 [ref. 37485], Smith 2016:1703 [ref. 34556], Fricke et al. 2018:51 [ref. 35805], Fricke et al. 2019:55 [ref. 36673] as Steminodium h., Klautau et al. 2020:7 [ref. 37903], Sutton et al. 2020:25 [ref. 37832], Love et al. 2021:40 [ref. 39279], Eduardo et al. 2022:5 [ref. 39574], Page et al. 2023:57 [ref. 40505], Fricke et al. 2024:136 [ref. 41622]). Current status: Valid as Stemonidium hypomelas Gilbert 1905. Serrivomeridae. Distribution: Circumglobal in tropical and warm temperate ocans, except North Atlantic. Habitat: marine.