rhamphidognatha, Saccogaster Cohen [D. M.] 1987:2, Fig. 1 [Contributions in Science (Los Angeles) No. 385; ref. 6040] Off Mississippi Delta, Gulf of Mexico, 29°13.5'N, 88°16.5'W, depth 210 meters. Holotype (unique): LACM 44189-1. •Valid as Saccogaster rhamphidognatha Cohen 1987 -- (McEachran & Fechhelm 1998:747 [ref. 23897], Nielsen & Cohen in Nielsen et al. 1999:110 [ref. 24448], Nielsen 2003:974 [ref. 27009], Garrido-Linares & Acero P. 2006:289 [ref. 28946]). •Valid as Parasaccogaster rhamphidognatha (Cohen 1987) -- (Nielsen et al. 2012:32 [ref. 32315], Møller et al. 2016:Appendix A [ref. 34432] in Bythitidae). Current status: Valid as Parasaccogaster rhamphidognatha (Cohen 1987). Bythitidae. Distribution: Western Atlantic, Gulf of Mexico (holotype only). Habitat: marine.