Measurements.—Eighteen adults of both sexes from San Juan County, Washington, average: Total length 78.2; length of tail 34.4; hind foot 10.1; ear 15; height of tragus 7.4; weight 5.9 grams.
Distribution.—From the eastern base of the Cascade Mountains to the Pacific. This is the commonest Myotis found in western Washington. Marginal localities are: Hamilton ([Miller] and [Allen], 1928: 71), and Goldendale ([Miller] and [Allen], 1928: 71).
Myotis keenii keenii ([Merriam])
Keen myotis
Vespertilio subulatus keenii [Merriam], Amer. Nat., 29:860, September, 1895.
Myotis subulatus keenii [Miller], N. Amer. Fauna, 13:77, October 16, 1897.
Myotis keenii keenii [Miller] and [Allen], U. S. Nat. Mus. Bull., 144:104, May 25, 1928.
Type.—Obtained at Masset, Graham Island, Queen Charlotte Islands, British Columbia, by J. H. Keen in 1894; type in United States National Museum.
Measurements.—[Miller] and [Allen] (1928: 109) list the measurements of a male from Sol Duc Hot Springs, Clallam County, and a specimen of unknown sex from Lake Cushman, Jefferson County, as, respectively: total length 89, 87; length of tail 34, 36; hind foot 8.4, 7.4; ear?, 14.6.
Distribution.—Only the Olympic Peninsula, where it has been recorded by [Miller] and [Allen] (1928: 104) from Sol Duc Hot Springs and Lake Cushman.
Description.—Myotis keenii is similar, in general, to Myotis lucifugus and Myotis yumanensis, but the ears are longer and when laid forward reach about 4 mm. past the nose rather than ending at the nostrils. The foot is of medium size (about 8 mm.) and no keel is present on the calcar.