Bathylychnops Cohen [D. M.] 1958:48 Masc. Bathylychnops exilis Cohen 1958. Type by original designation (also monotypic). •Valid as Bathylychnops Cohen 1958 -- (Cohen 1973:156 [ref. 6589], Cohen in Whitehead et al. 1984:395 [ref. 13675], Ahlstrom et al. 1984:156 [ref. 13627], Fujii in Masuda et al. 1984:42 [ref. 6441], Badcock 1988:423 [ref. 24463], Parin et al. 2009:839 [ref. 30628], Parin et al. 2014:107 [ref. 33547], Prokofiev 2020:704 [ref. 37861]). Current status: Valid as Bathylychnops Cohen 1958. Opisthoproctidae.