MAMMALS 269 



M. calijornicus (Audubon & Bachman). Body slender and very 

 small, with a long tail and legs; color yellowish gray; wings, ears and 

 snout blackish; fur very long; length 78 mm.; tail 38 mm.; forearm 31 

 mm.; western United States; eastward to Texas and Kansas: common. 



Subspecies of M. calif ornicus 



M. c. californicus (Aud. & Bach.) . Western United States; eastward 

 to Wyoming and Texas. 



M. c. caurinus Miller. Very much darker in color: coast district, 

 northern California to British Columbia. 



M. c. ciliolahrum (Merriam). Very much paler in color: Kansas to 

 central South Dakota. 



M. yumanensis (H. Allen). Body small, whitish gray or brown 

 in color; length 80 mm.; tail 36 mm.; forearm 34 mm.; feet very large: 

 western United States, west of the mountains. 



Subspecies of M. yumanensis 



M. y. yumanensis (H. A.). Southwestern States from Utah to 

 southern California. 



V>. 



Fig. 150. — Teeth of Lasionycleris noctivagans, the upper jaw at the left {from Miller). 



M. y. saturatus Miller. Color much darker: central Oregon to 

 British Columbia. 



M. evotis (H. Allen). Long-eared bat. Color Hght yellowish brown; 

 ength 90 mm. ; tail 42 mm. ; forearm 37 ; ears very long, reaching 7 to 10 



Fig. 151. — Teeth of Pipislrellus hesperus (above) and P. siihflavus (below), the upper jaw at 



the left {from Miller). 



mm. beyond the tip of the nose when laid forward: western States; 

 eastward to the eastern edge of the Rocky Mountains. 



2. Lasionycteris Peters. Medium sized bats with short, broad ears 

 and a broad tragus; dentition 23, i i, 2 /3, 3/3:1 species. 



/.. noctivagans (LeConte). Silver-haired bat (Fig. 150). Color 

 deep brown-black, the back with a silvery sheen; length 100 mm.; tail 



