unicolor, Barathronus Nielsen [J. G.] 1984:579, Fig. 1 [Copeia 1984 (no. 3); ref. 5286] North Atlantic, 38°28'N, 70°52'W, depth 2931-2967 meters. Holotype: MCZ 56936. Paratypes: MCZ 56935 (2), 56937-39 (4, 2, 2); VIMS 05236-37 (1, 2); ZMUC P77722-25 (1, 1, 1, 1). •Valid as Barathronus unicolor Nielsen 1984 -- (Nielsen & Cohen in Nielsen et al. 1999:139 [ref. 24448], Nielsen 2003:976 [ref. 27009], Moore et al. 2003:208 [ref. 27076], Garrido-Linares & Acero P. 2006:288 [ref. 28946], Nielsen et al. 2015:59 [ref. 33736], Møller et al. 2016:Appendix A [ref. 34432] in Bythitidae). •Synonym of Barathronus pacificus Nielsen & Eagle 1974 -- (Nielsen 2019:248 [ref. 36994]). Current status: Synonym of Barathronus pacificus Nielsen & Eagle 1974. Bythitidae. Habitat: marine.