pallasii, Thymalus Valenciennes [A.] in Cuvier & Valenciennes 1848:448 [Histoire naturelle des poissons v. 21; ref. 1013] Kolyma River, Russia. Syntypes: MNHN 0000-3664 (3), ZMB 23549 or 23550 (1). Type catalog: Bertin 1940:305 [ref. 293]. Type information: Svetovidov 1978:21 [ref. 6025]. Genus should have been Thymallus. •Synonym of Thymallus arcticus (Pallas 1776), but a valid subspecies -- (Berg 1948:428 [ref. 12882], Chereshnev 1996:603 [ref. 24659], Sigler & Sigler 1996:218 [ref. 25943], Reshetnikov et al. 1997:732 [ref. 24702], Dorofeeva 1998:48 [ref. 23573], Chereshnev et al. 2001:74 [ref. 26736] as pallasi, Fedorov et al. 2003:36 [ref. 27579], Weiss et al. 2006:511 [ref. 29557]). •Synonym of Thymallus arcticus (Pallasi 1776) -- (Parin et al. 2014:129 [ref. 33547]). •Valid as Thymallus pallasii Valenciennes 1848 -- (Bogutskaya & Naseka 2004:148 [ref. 28183], Kottelat 2006:86 [ref. 28831], Dyldin et al. 2017:115 [ref. 35967], Weiss et al. 2020:[3] [ref. 37974]). Current status: Valid as Thymallus pallasii Valenciennes 1848. Salmonidae: Thymallinae. Distribution: North Asia: Kolyma River basin, southern Taimyr Peninsula, lower reaches of Lena River (Russia). Habitat: freshwater.