robustus, Grammonus Smith [H. M.] & Radcliffe [L.] in Radcliffe 1913:168, Pl. 13 (fig. 4) [Proceedings of the United States National Museum v. 44 (no. 1948); ref. 3579] Between Cebu and Leyte, 10°38'00"N, 124°13'08"E, Philippines, Albatross station 5409, depth 189 fathoms. Holotype (unique): USNM 74149. •Valid as Oligopus robustus (Smith & Radcliffe 1913) -- (Cohen & Nielsen 1978:49 [ref. 881], Machida in Masuda et al. 1984:101 [ref. 6441], Uiblein et al. 1994:18 [ref. 21798], Klausewitz & Uiblein 1994:21 [ref. 22366], Klausewitz 1994:465 [ref. 23564], Nielsen 1999:1984 [ref. 24753], Nakabo 2000:449 [ref. 25086], Shinohara et al. 2001:308 [ref. 25995], Nakabo 2002:449 [ref. 26001], Shinohara et al. 2005:414 [ref. 28370]). •Valid as Grammonus robustus Smith & Radcliffe 1913 -- (Nielsen & Cohen in Nielsen et al. 1999:104 [ref. 24448], Manilo & Bogorodsky 2003:S99 [ref. 27377], Nielsen & Cohen 2004:85 [ref. 28073], Nielsen 2007:375 [ref. 29358], Randall & Hughes 2008:143 [ref. 29910], Nielsen & Prokofiev 2010:192 [ref. 30790], Møller et al. 2016:Appendix A [ref. 34432], Golani & Fricke 2018:40 [ref. 36273], Kim et al. 2020:73 [ref. 39118], Anderson & Cohen 2022:265 [ref. 39707]). Current status: Valid as Grammonus robustus Smith & Radcliffe 1913. Bythitidae. Distribution: Red Sea; Indo-West Pacific: South Africa east to Philippines, north to southern Korea and southern Japan. Habitat: marine.