MAMMALS 



343 



3. Eutamias Trouessart. Western chipmunks. Similar to Tama^, 

 but with 2 upper premolars; nail of thumb well developed: about 35 

 species and subspecies; in western America. 



E. dorsaUs (Baird) (Fig. 181). Color rusty gray with a dark brown 

 dorsal stripe; other stripes faint; under parts grayish white; length 237 

 mm.; tail 105 mm.; hind foot 22 mm.: Utah to the Sierras; southward 

 into New Mexico and Arizona. 



E. townsendi (Bachman). Color dark yellowish brown with 5 

 black dorsal stripes; light stripes almost obsolete; tail black, fringed 

 with white; belly white; length 257 mm.; tail 107 mm.; hind foot 35 



Fig. 181. — Skull of Eutamias dorsalis (premolars and molars below, those of the upper jaw 

 being at the left ) {from Elliot). 



mm.: British Columbia to the Columbia River; from the coast to 

 Lake Chelan; i annual litter, possibly more, of 2 to 6 each. 



E. hindsi (Gray). Color reddish brown; under parts white; outer 

 pair of dorsal stripes very light; length 264 mm.; tail no mm.; hind 

 foot 34 mm.: coast region from San Francisco, northward. 



E. pricei (Allen). Color grayish brown; beneath whitish; 5 black 

 dorsal stripes and 4 ashy gray; length 252 mm.; tail 119 mm.; hind foot 

 35 mm.: coast region from San Francisco to San Diego. 



E. merriami (Allen). Color pale yellowish gray; ears high, pointed; 

 length 285 mm.; tail 117 mm.; hind foot 34 mm.: mountains of southern 

 California. 



E. quadrimaculatus (Gray). Color of head and rump gray, rest of 

 back ferruginous; ears very large; length 249 mm.; tail 93 mm.; hind 



