derjavini, Radulinopsis Soldatov [V. K.] & Lindberg [G. U.] 1930:185, Figs. 30-31 [Izvestiia Tikhookeanskogo Nauchno-Issledovatel'skogo Instituta Rybnogo Khoziaistva i Okeanografii [Proceedings, Pacific Research Institute of Fisheries and Oceanography, TINRO, Moskva] v. 5; ref. 4164] Peter the Great Bay, Russia. Syntypes: (2) not at ZIN. •Valid as Radulinopsis derjavini Soldatov & Lindberg 1930 -- (Lindberg & Krasyukova 1987:187 [ref. 15964], Sokolovskaya et al. 1998:10 [ref. 24670] as derzhavini, Yabe & Maruyama 2001:53 [ref. 25245], Parin et al. 2002:S85 [ref. 28300], Parin et al. 2014:270 [ref. 33547], Dyldin & Orlov 2022:51 [ref. 38972]). Current status: Valid as Radulinopsis derjavini Soldatov & Lindberg 1930. Psychrolutidae: Psychrolutinae. Distribution: Northwestern Pacific. Habitat: marine.