quadrilateralis, Coregonus Richardson [J.] 1823:714 [10], Pl. 25 (fig. 2) [Narrative of a journey to the shores of the Polar Sea; ref. 18624] Fort Enterprise, Hudson Bay, and Arctic Sea. No types known. On p. 10 of separate. •Synonym of Coregonus cylindraceus (Pennant 1784) -- (Berg 1948:421 [ref. 12882]). •Synonym of Coregonus cylindraceus (Pennant 1784), but a valid subspecies -- (Smith 1986:220 [ref. 22186]). •Synonym of Prosopium cylindraceum (Pennant 1784) -- (Scott & Crossman 1998:290 [ref. 24570], Mecklenburg et al. 2002:189 [ref. 25968]). Current status: Synonym of Prosopium cylindraceum (Pennant 1784). Salmonidae: Coregoninae. Habitat: freshwater, brackish.