platycephalus, Cataetyx Smith [H. M.] & Radcliffe [L.] in Radcliffe 1913:169, Pl. 16 (fig. 1) [Proceedings of the United States National Museum v. 44 (no. 1948); ref. 3579] Molucca Passage, 0°37'00"N, 127°15'00"E, Molucca Islands, Indonesia, Albatross station 5618, depth 417 fathoms. Holotype: USNM 74150. Paratype: USNM 398909 (1). •Possibly a synonym of Pseudonus squamiceps (Lloyd 1909) -- (Nielsen & Cohen in Nielsen et al. 1999:108 [ref. 24448]). •Valid as Pseudonus playcephalus (Smith & Radcliffe 1913) -- (Nielsen 1999:1984 [ref. 24753]). •Synonym of Pseudonus squamiceps (Lloyd 1907) -- (Nielsen 2011:60 [ref. 31293]). Current status: Synonym of Pseudonus squamiceps (Lloyd 1907). Bythitidae. Habitat: marine.