LITTLE BROWN BAT 



yellowish on belly, the fur everywhere blackish plumbeous 

 at base." (Miller) Total length, 3 inches; tail vertebrae, 

 1.2 inches; hind foot, .28 inch; forearm, 1.3 inches. Found 

 in "The humid coast district of British Columbia, Washing- 

 ton, and Oregon, and possibly of northern California also." 

 (Miller) 



Prairie Little Brown Bat. — Myotis caUfornicus ciliolahrum 

 (Merriam). 

 Paler than typical caUfornicus and with slightly larger 

 ears ; interf emoral membrane thinly haired on upper surface 

 for about half its extent from body, about one-fifth its 

 extent on under surface. Upperparts pale yellowish white 

 in marked contrast to dark brown of ears, muzzle, and chin. 

 Total length, 3.2 inches; tail vertebrae, 1.4 inches; hind foot, 

 .28 inch; forearm, 1.3 inches. Found in Kansas and South 

 Dakota; limits of range unknown. 



La GruUa Brown Bat. — Myotis orinomus Elliot. 



Like typical caUfornicus externally but larger and with 

 longer thumb ; tragus tall, slender, tapering and rounded at 

 tip; pelage soft and silky. Upperparts tawny olive; under- 

 parts pale buffy; membranes dark brown. Total length, 



3.4 inches; tail vertebree, 1.6 inches; hind foot, .28 inch; 

 forearm, 1.3 inches. Found in southern California in the 

 high Upper Sonoran Zone. 



Yuma Bat. — MyoUs yumanensis yumanensis (H. Allen). 



Size small; ear reaching just beyond tip of nose when laid 

 forward; tip of ear narrow and abruptly rounded; tragus 

 slender, sharply pointed; hind foot proportionally large; 

 calcar long. Upperparts pale wood-brown or buff; under- 

 parts whitish; membranes light brown and rather thick for 

 such a small Bat. Total length, 3.4 inches; tail vertebras, 



1.5 inches; hind foot, .68 inch; forearm, 1.4 inches. Found 

 in "Austral Zones and lower edge of Transition Zone from 

 the southwestern United States to San Luis Potosi and 

 Michoacan, Mexico." (Miller) 



Tejon Bat. — MyoUs yumanensis sociabiUs H. W. Grinnell. 

 Intermediate between typical yumanensis and saturatus. 

 Upperparts wood-brown; underparts light buff; pelage 

 everywhere clove-brown at base. Total length, 3.3 inches; 

 tail vertebrce, 1.35 inches; hind foot, .33 inch; forearm, 1.4 

 inches. Found in "the semi-arid Transition and Sonoran 

 Zones in California west and north of the southeastern 

 deserts." (Grinnell); taken also on Mt. Whitney, 11,000 

 feet. 



Miller Bat. — MyoUs yumanensis sahiratus Miller. 



Resembling typical yumanensis but with longer fur and 

 darker color; smaller than typical lucifugus which it re- 

 sembles in color. Upperparts dark glossy yellowish brown ; 

 underparts old gold; sides, chin, and throat darker than 

 underparts; membranes blackish; pelage everywhere slaty 

 black at base. Total length, 3.2 inches; tail vertebrae, 1.4 



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