nudithorax, Ricuzenius Bolin [R. L.] 1936:27, Fig. 5 [Proceedings of the United States National Museum v. 84 (no. 3000); ref. 505] Yeso Strait, Japan, 44°04'N, 145°32'E, Albatross station 5031, depth 86 fathoms. Holotype (unique): USNM 102104. •Valid as Ricuzenius nudithorax Bolin 1936 -- (Yabe in Masuda et al. 1984:324 [ref. 6441], Lindberg & Krasyukova 1987:186 [ref. 15964], Nakabo 2000:636 [ref. 25086], Nakabo 2002:636 [ref. 26001], Parin et al. 2002:S85 [ref. 28300], Parin et al. 2014:271 [ref. 33547]). Current status: Valid as Ricuzenius nudithorax Bolin 1936. Psychrolutidae. Distribution: Western North Pacific. Habitat: marine.