198 Merriam — The Chipmunks of the Genus Eutamias. 



Tinder parts not vhite (washed with fulvous). 



3 dorsal dark stripes black ; stripe from nose to ear 

 distinct; side of face not suffused with yellowish 



(summer pelage) hindsi. 



3 dorsal dark stripes not black ; stripe from nose to 

 oar absent; sides of face strongly suffused with yel- 

 lowish ochrogenys. 



Ear stripes and spot behind ear not well defined; tail exceed- 

 ingly long , merriami. 



'O'J 



Kky to Members of Townsendi Group in Ordinary Pelage. 



Tail exceedingly long ; ear stripes and post-auricular spots in- 

 distinct. 



General color grayish merriami. 



Tail not exceedingly long ; ear stripes and post-auricular spots 

 conspicuous. 

 Rump and general ground color clear light gray ; dark stripes 



rusty ; flanks bright ochraceous fulvous senex. 



Rump and general ground color not gray ; dorsal stripes not 

 rusty (except in Jnndsi). 

 Under parts suffused with fulvous and strongly en- 

 croached upon by color of sides ; sides of throat and 

 face strongly suffused with fulvous. 



General color rich dark grizzled olive-gray oclirogenys. 



Under parts white, not encroached ujion by color of 

 sides; sides of throat not suffused, and face only 

 slightly suffused with fulvous. 

 General color uniform yellowish olive-gray, includ- 

 ing flanks and rump ; all 5 dark stripes showing 

 more or less black ; outer pair of light stripes 

 broad, pale yellowish, becoming grayish with 



wear toivnsoidi. 



General color not uniform and not yellowish olive 

 gray ; flanks ))right fulvous, becoming pale with 

 wear ; dorsal stripes rusty, the median one (and 

 sometimes the inner lateral pair) showing black 

 along middle ; outer pair of light stripes narrow, 

 whitish Jdndsi. 



Key to Members of Townsendi Group in Reddish Post-breeding 



Pelacje. 



Tail exceedingly long. 



Ear stripes and post-auricular spots not sharply defined ; 

 outer pair of light stripes whitish; inner pair grizzled 

 gray merriami. 



