pygmaeus, Cottus quadricornis Lönnberg [E.] 1933:9, Pl. 1 (fig. 2) [Arkiv för Zoologi v. 24 A (pt 3) (no. 12) [1932]; ref. 22149] Lake Puruvesi, Finland. Syntypes: MZH. •Synonym of Myoxocephalus quadricornis (Linnaeus 1758), subspecies onegensis Berg & Popov 1932 -- (Berg 1949:1135 [ref. 20662]). •Synonym of Triglopsis quadricornis (Linnaeus 1758) -- (Kottelat 1997:171 [ref. 22952]). •Synonym of Myoxocephalus quadricornis (Linnaeus 1758) -- (based on generic placement of quadricornis). Current status: Synonym of Myoxocephalus quadricornis (Linnaeus 1758). Psychrolutidae: Myoxocephalinae. Habitat: freshwater, brackish, marine.