330 



VERTEBRATE ANIMALS OF THE UNITED STATES 



P. longimemhris (Coues). Color uniform, being buff above and 

 white below; length 145 mm.; tail 74 mm.; hind foot 18 mm.: San 

 Joaquin Valley; Sonoran zone. 



P. parvus (Peale). Color gray or buff, having two color phases; 

 length 171 mm.; tail 91 mm.; hind foot 22 mm.: central and south- 

 eastern Oregon, Washington, and the Great Basin; Upper 

 Sonoran zone. 





Subspecies of P. parvus 



Yakima River, Washington to 



P. p. parvus (Peale). 

 southeastern Oregon. 



P. p. mollipilosus Coues. Size smaller, color darker: 

 northeastern California to Klamath Basin. 



P. p. olivaceus Merr. Color lighter: Great Basin from 

 southern Idaho and Oregon to Owens Valley, California. 

 P.p. magruderensis Osgood. Size larger; length 198 

 mm.: southeastern California and Nevada. 



P. lordi (Gray). Color pale buff; length 183 mm.; 

 tail 97 mm.; hind foot 23 mm.: plains of the Columbia; 

 Upper Sonoran and Transition zones. 



P.formosus Merr. Color grizzled sepia; white below; 

 length 189 mm.; tail 106 mm.; hind foot 24 mm.; tail 

 very long, heavily crested: southern Nevada, Utah and 

 California; Lower Sonoran zone. 



P. hispidus Baird. Color ochraceous; under parts 

 white; fur harsh but without bristles; soles of hind feet 

 naked; length 222 mm.; tail 108 mm.; hind foot 26 mm.: 

 Great Plains from the Dakotas to Mexico; westward to the 

 base of the Rockies. 

 P. penicillatus Woodhouse (Fig. 176). Color buff; length 205 mm.; 

 tail 100 mm.; hind foot 25 mm.; tail long and crested: southern Cali- 

 fornia, Arizona and Nevada. 



P. intermedius Merr. Color drab ; fur harsh, with spines on the rump ; 

 length 179 mm.; tail 102 mm.; hind foot 22 mm.: southern Arizona, 

 New Mexico and Texas. 



P. fallax Merr. Color dark drab; length 192 mm.; hind foot 23 

 mm.: southern California. 



P. femoralis Allen. Size very large; tail and ears very long; color 

 dark drab; under parts dirty white; length 223 mm.; tail 126 mm.: 

 hind foot 27 mm.: extreme southern California. 



Fig. 176. 

 Perognathus 

 penicillatus 

 {after Stone 



bf Cram). 



