Peromyscus oreas Bangs, 1898 . Proc. Biol. Soc. Washington, 12:84.

TYPE LOCALITY: Canada, British Columbia, Mount Baker Range, 6500 ft, near boundary of Whatcom Co., Washington.

DISTRIBUTION: SW British Columbia, including Vancouver Island and neighboring islands, Canada, and W Washington, USA.

SYNONYMS: interdictus, isolatus.

COMMENTS: Maintained as a subspecies of P. maniculatus by Osgood (1909) and Hooper (1968b). Sheppe (1961) considered oreas a distinct species, a conclusion ratified by recent taxonomic research (Allard et al. 1987; Allard and Greenbaum, 1988; Calhoun and Greenbaum, 1991; Gunn and Greenbaum, 1986; Sullivan et al., 1990). Viewed as sister species of P. sitkensis (Gunn and Greenbaum, 1986). Further clarification of relationship to taxa in P. maniculatus (e.g., keeni and macrorhinus) and to P. sitkensis is required. P. maniculatus species group.