oncerocephalus, Sirembo Vaillant [L. L.] 1888:277, Pl. 24 (fig. 6) [Expéditions scientifiques du "Travailleur" et du "Talisman"; ref. 4496] Near the Cape Verde Islands, depth 3200 meters. Holotype (unique): MNHN 1886-0541. •Valid as Bassozetus oncerocephalus (Vaillant 1888) -- (Nielsen 1990:566 [ref. 16246], Nielsen & Cohen in Nielsen et al. 1999:58 [ref. 24448], Nielsen & Merrett 2000:42 [ref. 24949], Tomiyama et al. 2016:[4] [ref. 34428], Nielsen 2016:1950 [ref. 34583], Tomiyama et al. 2018:[8] [ref. 35811]). Current status: Valid as Bassozetus oncerocephalus (Vaillant 1888). Ophidiidae: Neobythitinae. Distribution: Eastern Atlantic: Cape Verde Islands. Habitat: marine.