312 



VERTEBRATE ANIMALS OF THE UNITED STATES 



mm 



Subspecies of P. intermedins 



P. i. intermedins Merr, British Columbia to northern California 

 and Utah; central Montana to New Mexico. 



P. i. levis Howells. Similar to the above; color brownish drab; feet 

 white : central Alberta into Montana. 



P. i. olympicus (Elliot). Color dark drab; length 155 mm.; tail 42 

 mm. : Olympic and Cascade Mountains. 



P. i. celsus Howells. Color light brown: Sierra 

 Nevadas. 



P. alhipes Merr. Color grizzled brown; grayish 

 beneath; feet white ; length 168 mm. ; tail 62 mm. ; hind 

 foot 19 mm.: coastal region from Humboldt County, 

 California, north to the Columbia River. 



P. longicaudus True. Color bright rusty brown; 

 feet brown, length 148 mm.: coniferous forests in the 

 coastal region of western Oregon and northwestern 

 California. The mouse is arboreal in habits, building 

 a large nest of twigs from 30 to 100 feet from the ground 

 in which it raises several litters of young a year, 

 numbering from i to 4 each. 



7. Evotomys Coues. Red-back mice. Body 

 small and reddish in color, with a short tail; molars 

 rooted, and small and weak, the lower incisors extend- 

 ing along the outer side of them; incisors without 

 grooves: circumpolar; about 24 species and subspecies 

 in the United States and Canada, which nest in under- 

 ground burrows in which they raise several broods a 

 year, each numbering from 3 to 8 young; they feed on seeds, roots, 

 etc., and lay up stores for winter use. 



^ E. gapperi (Vigors) (Fig. 173). Color bright chestnut above; sides 

 buff, sharply defined from the color of the back; length 140 mm.; tail 

 40 mm.; hind foot 18 mm.: Canada and northern United States; 

 southward into the Pennsylvania mountains; westward to eastern 

 Oregon; in cool forests and swamps. 







Fig. 173. — Evo- 

 tomys gapperi {after 

 Stone &° Cram). 



Subspecies of E. gapperi 



E. g. gapperi (Vigors). Pennsylvania to Canada; westward to the 

 Rockies. 



E. g. ochraceus Miller. Color pale rusty rufous: Upper Boreal zone 

 of White Mountains, New Hampshire and eastward. 



