FIELD BOOK OF MAMMALS 



.4 inch; forearm, 1.5 inches; wing expanse, 10.4 inches. 

 Found from "western Montana to the Black Hills and over 

 western North Dakota." (Bailey) 



Northwestern Long-legged Bat. — Myotis longicrus longicrus 

 (True). 

 Resembling typical lucifugus but a trifle larger and with 

 proportionally shorter ear and forearm. Upperparts bister 

 sprinkled with lighter tipped hairs; underparts washed with 

 vinaceous buff. Total length, 4 inches; tail vertebrse, 1,8 

 inches; hind foot, .32 inch; length of forearm, 1.5 inches. 

 Found in ' ' Boreal and Transition Zones from Puget Sound 

 east to Wyoming; south at least to Arizona and southern 

 California, and probably much farther. [The range as here 

 given is that of the entire species.] " (Miller) 



Interior Long-legged Bat. — Myotis longicrus interior Miller. 

 Differing from typical longicrus in being tawny olive instead 

 of bister. Has been taken in Idaho, Wyoming, Colorado, 

 Nevada, New Mexico, and Arizona. 



Little California Bat. — Myotis californicus californicus (Audu- 

 bon and Bachman). 

 Smallest of the Myotis found in the United States and 

 characterized by "slender form, delicate membranes, long 

 tail and legs, small feet, and pale yellowish color." (Miller) 

 Ears reaching just beyond tip of nose when laid forward, 

 tragus slender, more or less straight, pointed. Upperparts 

 light yellowish gray ; underparts paler ; membranes blackish. 

 Total length, 3.2 inches; tail vertebrse, 1.5 inches; hind foot, 

 .25 inch; forearm, 1.25 inches. Found in "Austral Zones 

 and lower part of Transition Zone throughout the western 

 United vStates and Lower California; east to Wyoming and 

 Texas." (Miller) 



Little Pallid Bat. — Myotis californicus pallidus Stephens. 

 Resembling typical californicus but slightly _ smaller and 

 paler. Upperparts light buff, pelage blackish at base; 

 underparts pale buff; membranes light brown. Total 

 length, 3.2 inches; tail vertebras, 1.6 inches; hind foot, .3 

 inch; forearm, 1.2 inches. Found in California in "Lower 

 Sonoran Zone on the Colorado and Mohave deserts, and 

 north in Owens Valley at least to Lone Pine." (Grinnell) 



Oak Foliage Bat. — Myotis californicus quercinus H. W. 

 Grinnell. 

 Intermediate in color between typical californicus and 

 pallidus. Upperparts cinnamon; underparts light buff. 

 Total length, 3.2 inches; tail vertebra, 1.45 inches; hind 

 foot, .24 inch; forearm, 1.3 inches. Found in Southern 

 California and the Santa Barbara Islands in Upper Sonoran 

 and low Transition Zones. 



Northwestern Little Brown Bat. — Myotis californicus caurinus 

 Miller. 

 Very much darker than typical californicus. Upperparts 

 very dark, "almost blackish sepia throughout, slightly 



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