profundissimus, Grimaldichthys Roule [L.] 1913:3, Fig. [Bulletin de l'Institut Océanographique (Monaco) No. 261; ref. 3816] Southwest of Cape Verde Islands, 12°07'30"N, 35°53'W, station 1173, depth 6035 meters. Holotype (unique): MOM 0091-0563. Type catalog: Belloc 1949:15 [ref. 21544]. Also treated as new in Roule 1914:498 [ref. 3814]. •Valid as Holcomycteronus profundissimus (Roule 1913) -- (Cohen & Nielsen 1978:32 [ref. 881], Nielsen 1990:569 [ref. 16246], Nielsen & Cohen in Nielsen et al. 1999:68 [ref. 24448], Nielsen & Robins 2003:969 [ref. 27008], Love et al. 2005:50 [ref. 37547], Mundy 2005:244 [ref. 28379], Anderson & Stein 2006:3 [ref. 28595], Garrido-Linares & Acero P. 2006:294 [ref. 28946], Nielsen et al. 2008:48 [ref. 29625], Fujii et al. 2010:512 [ref. 30881], Nielsen & Møller 2011:785 [ref. 31147], Nielsen 2016:1950 [ref. 34583], Gerringer et al. 2021:2 [ref. 38756], Love et al. 2021:82 [ref. 39279], Page et al. 2023:108 [ref. 40505]). Current status: Valid as Holcomycteronus profundissimus (Roule 1913). Ophidiidae: Neobythitinae. Distribution: Possibly circumglobal, but known from few specimens. Habitat: marine.