jonassoni, Leucochlamys Nybelin [O.] 1957:311, Pl. 7 (figs. 3, 9) [Reports of the Swedish Deep-Sea Expedition 1947-1948 v. 2 (Zool.) (fasc. 3) (art. 20); ref. 3235] North Atlantic, south of Cape Verde Islands, 9°38'N, 26°20'W to 9°38'N, 26°30'W, depth 5610-5600 meters. Holotype (unique): NHMG Pi. 1745. •Valid as Leucochlamys jonassoni Nybelin 1957 -- (Nielsen 1969:31 [ref. 3195]). •Valid as Sciadonus jonassoni (Nybelin 1957) -- (Cohen & Nielsen 1978:63 [ref. 881], Nielsen & Cohen in Nielsen et al. 1999:142 [ref. 24448], Nielsen 2003:976 [ref. 27009], Garrido-Linares & Acero P. 2006:289 [ref. 28946], Møller et al. 2016:Appendix A [ref. 34432] in Bythitidae, Nielsen 2016:1956 [ref. 34583], Nielsen 2018:181 [ref. 36002], Melo et al. 2021:5 [ref. 38956]). Current status: Valid as Sciadonus jonassoni (Nybelin 1957). Bythitidae. Distribution: North Atlantic, between 1464 and 5610 meters depth. Habitat: marine.