Measurements.—Four males and a female from the Blue Mountains, Columbia County, average: total length 93; length of tail 41.5; hind foot?; ear 12; height of tragus 6.3.
Distribution.—Known only from the Blue Mountains area of the southeastern part of the state, from Walla Walla (E. S. B.) east to Anatone ([Miller] and [Allen], 1928: 144).
Remarks.—Of 5 specimens available from the Blue Mountains, 4 are like interior and 1 is like longicrus.
Fig. 38. Distribution of the California myotis in Washington. A. Myotis californicus californicus. B. Myotis californicus caurinus.
Myotis californicus (Audubon and Bachman)
California myotis
Description.—Myotis californicus may be separated from all Myotis that occur in Washington, except Myotis subulatus, by its small foot (about 6 mm.). It is the only small-footed bat found in western Washington. In eastern Washington, where Myotis subulatus occurs, the cleaned skulls of the two species must be compared before certain identification of some specimens is possible. The skull of M. californicus possesses a higher cranium and more abruptly rising forehead than that of M. subulatus.
Four geographic races of this bat recognized by [Miller] and [Allen] (1928: 149) range from southern Alaska southward over western North America to southern Mexico. Two subspecies occur in Washington.