Peromyscus maniculatus hollisteri [Osgood]
Peromyscus maniculatus hollisteri [Osgood], N. Amer. Fauna, 28:62, April 17, 1909.
Type.—Obtained at Friday Harbor, San Juan Island, San Juan County, Washington, by N. Hollister on October 23, 1903; type in United States National Museum.
Racial characters.—Similar to oreas but darker, less reddish, and with much shorter tail. Length of tail about 40 per cent of total length.
Measurements.—Populations of deer mice on the various islands vary slightly in average measurements. The average measurements of 10 males and 10 females from San Juan Island, 20 males and 15 females from Blakeley Island, and 20 males and 15 females from Cypress Island, are respectively: total length 189, 183, 179; length of tail 87, 82, 79; hind foot 22.8, 22, 19.5; ear 19.4, 18.7, 19.5; weight 33, 29, 32 grams.
Distribution.—The San Juan Islands, San Juan and Skagit counties, in northern Puget Sound.
Peromyscus maniculatus austerus ([Baird])
Hesperomys austerus [Baird], Proc. Acad. Nat. Sci. Philadelphia, 7:336, 1855.
Sitomys americanus austerus [Allen], Bull. Amer. Mus. Nat. Hist., 5:192, August 18, 1893.