FIELD BOOK OF MAMMALS 



inches; hind foot, .34 inch; forearm, 1.4 inches. Found in 

 "Transition Zone in Oregon, Washington, and British 

 Columbia." (Miller) 



Cave Bat. — My oils velifer (Allen). 



The largest species of the genus found in the United States; 

 ears short and pointed. Upperparts uniform dull sepia; 

 underparts somewhat paler; pelage everywhere slate- 

 colored at base. Total length, 4 inches; tail vertebras, 

 1.6 inches; hind foot, .4 inch; forearm, 1.6 inches. Found 

 along the southern border of the United States. 



Bailey Little Brown Bat. — Myotis haileyi HolHster. 



Most like velifer but smaller, forearm shorter; tragus broad 

 at base and sharply pointed; larger than occultus, ears. 

 larger. Sepia above, smoke-gray below; membranes black. 

 Forearm, 1.6 inches; hind foot, .6 inch. Has been taken 

 only at Ruidoso and Luna, New Mexico. 



Little Gray Bat. — -Myotis grisescens Howell. 



Most nearly related to velifer but darker in color and wings 

 attached to feet at ankle joint instead of at base of toes. 

 Upperparts dark mouse-gray, the hairs one color from tips 

 to roots; underparts pale smoke-gray, the hairs darker 

 basally; membranes black. Total length, 3.7 inches; tail 

 vertebrae, 1.5 inches; hind foot, .42 inch; forearm, 1.65 

 inches. Found in Tennessee, Missouri, and Indiana. 



San Antonio Little Brown Bat. — Myotis incautus (Allen). 

 A large species about the size of velifer. Upperparts dull 

 light brown with a tinge of olive ; underparts grayish washed 

 with buffy; membranes blackish brown. Total length 3.75 

 inches; tail vertebrse, 1.75 inches; forearm, 1.7 inches; 

 expanse, 1 1 . i inches. Known from various localities in 

 New Mexico and Texas, from Carlsbad, New Mexico to 

 Bexar County, Texas. 



Say Bat. — Myotis suhulatus suhulatus (Say). 



Not unlike typical lucifiigus externally but with longer ears 

 which reach well beyond tip of nose when laid forward. 

 Darker than evotis and ears narrower; pelage soft and lax. 

 Upperparts yellowish brown; underparts slightly paler; 

 membranes dark brown. Total length, 3.8 inches; tail 

 vertebrce, 1.6 inches; hind foot, .36 inch; forearm, 1.5 

 inches; wing expanse, 10 inches. Found irregularly dis- 

 tributed in North America east of the Rocky Mountains. 



Keen Bat. — Myotis suhulatus keenii (Merriam). 



Darker than typical suhulatus and with longer tail and ears. 

 Total length, 3.4 inches; tail vertebrae, 1.6 inches; hind foot, 

 .33 inch; forearm, 1.4 inches. Found on Queen Charlotte 

 Islands, British Columbia, and probably on adjacent 

 mainland. 



Little Long-eared Bat. — Myotis evotis (H. Allen). 



Size medium; ears very large, naked and black; fur glossy, 

 soft and lax. Upperparts buffy yellowish; paler, almost 

 whitish, on underparts; membranes blackish. Total 



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