latifrons, Holtbyrnia Sazonov [Yu. I.] 1976:20, Fig. 3 [Trudy Instituta Okeanologii Imeni P.P. Shirshova v. 104; ref. 8553] Eastern Pacific, 5°59'S, 84°59'W, depth 800-900 meters, over 4000 meters. Holotype: ZIN 42628. Paratypes: (11) not at ZIN. Also appeared in Sazonov 1976:68 [ref. 19553]. •Valid as Holtbyrnia latifrons Sazonov 1976 -- (Matsui & Rosenblatt 1987:60 [ref. 10670], Matarese et al. 1989:77 [ref. 26885], Pequeño 1989:34 [ref. 14125], Matsui 1991:210 [ref. 23171], Sazonov et al. 1993:49 [ref. 21498], Sheiko & Fedorov 2000:18 [ref. 25650], Mecklenburg et al. 2002:163 [ref. 25968], Love et al. 2005:31 [ref. 37547], Parin et al. 2014:111 [ref. 33547], Burton & Lea 2019:39 [ref. 37205], Love et al. 2021:50 [ref. 39279], Grove et al. 2022:16 [ref. 41326], Page et al. 2023:62 [ref. 40505], Fricke et al. 2024:155 [ref. 41622]). Current status: Valid as Holtbyrnia latifrons Sazonov 1976. Platytroctidae. Distribution: Eastern Pacific: western Bering Sea; Gulf of Alaska (U.S.A.) south to Chile, including Galapagos Islands (Ecuador). Habitat: freshwater, marine.