298 VERTEBRATE ANIMALS OF THE UNITED STATES 



P. bovlii (Baird). Color light brown above; feet white; tail long, 



equal to or longer than the head and body; length 197 mm.; 



tail 103 mm.; hind foot 22 mm.; mammae 6: southwestern States 

 and Mexico. 



Subspecies of P. boy Hi 



P. b. boylii (Baird). West slopes of the Sierras from Yosemite to 

 Mount Shasta, thence along the east slope of the Coast Range south- 

 ward to San Francisco Bay. 



P. b. roivleyi (Allen). Like P. b. boylii, but paler: mountains of 

 southern California to western Texas; southern Nevada, Utah and 

 Colorado. 



P. b. aUwateri Allen. Like P. b. boylii; hind foot larger: central 

 Texas to Arkansas and Kansas. 



P. pectoralis laceianus Bailey. Color pinkish buff above mixed 

 with dusky; under parts pure white; length 187 mm.; tail 96 mm.; hind 

 foot 23 mm.: west-central Texas into Mexico. 



P. truei (Shufeldt). Rock mouse. Color ochraceous buff above, 

 mixed with fine dusky lines; under parts creamy white; feet white; tail 

 slightly bicolor; length 186 mm.; tail 92 mm.; hind foot 23 mm.; ears 

 very large, equal in length to hind foot; mammae 6: Pacific and south- 

 western States and Mexico. 



Subspecies of P. truei 



P. t. truei (Schuf.). Eastern California to eastern New Mexico and 

 southeastern Colorado. 



P. t. gilberti (Allen). Size larger and color darker: mountains of 

 interior California and the coast south of San Francisco Bay; north- 

 ward to central Oregon. 



P. t. martirensis (Allen). Size large; tail long: mountains of south- 

 western California. 



P. nasutus (Allen). Not quite as large as P. truei; tail finely annu- 

 lated; color grayish brown; mammae 6: mountains of Colorado, eastern 

 Arizona and western Texas. 



P. nuttalli (Harlan). Golden mouse. Color ochraceous above, 

 creamy white suffused with ochraceous below; ears ochraceous; 

 length 181 mm.; tail 85 mm.; hind foot 20 mm.; mamma; 6: 

 southeastern Virginia and northern North Carolina; westwards to 

 central Kentucky. 



