asprellus, Radulinus Gilbert [C. H.] 1890:88 [Proceedings of the United States National Museum v. 13 (no. 797); ref. 1623] Off northwestern U.S.A., depth 43-77 fathoms. Lectotype: USNM 43096. Paralectotypes: BMNH 1896.2.10.24 (1), 1900.7.11.11 (1), CAS-SU 25 (4), ZMB 13940 (1), ZMUO J1479 (1). Type catalog: Böhlke 1953:132 [ref. 12291], Paepke & Fricke 1992:286 [ref. 19946]. Lectotype established in Jordan & Evermann 1898:1921 [ref. 2444]. •Valid as Radulinus asprellus Gilbert 1890 -- (Bolin 1944:40 [ref. 6379], Eschmeyer & Herald 1983:181 [ref. 9277], Matarese et al. 1989:406 [ref. 26885], McAllister 1990:201 [ref. 14674], Yabe & Maruyama 2001:59 [ref. 25245], Mecklenburg et al. 2002:446 [ref. 25968], Nelson et al. 2004:121 [ref. 27807], Love et al. 2005:91 [ref. 37547], Maslenikov et al. 2013:11 [ref. 37947], Page et al. 2013:124 [ref. 32708], Pietsch & Orr 2015:44 [ref. 34694], Kells et al. 2016:188 [ref. 35888], Burton & Lea 2019:68 [ref. 37205], Love et al. 2021:125 [ref. 39279]). Current status: Valid as Radulinus asprellus Gilbert 1890. Psychrolutidae: Radulininae. Distribution: Northeastern Pacific: Bering Sea and Aleutian Islands (Alaska, U.S.A.) south to Pacific coast of northern Baja California (Mexico). Habitat: marine.