FIELD BOOK OF MAMMALS 



Upperparts. — Conspicuously striped with five dark and four 

 light-colored, longitudinal stripes which run from shoulder 

 almost or quite to base of tail; the dark stripes are black, 

 the light stripes are whitish or buffy; the median stripe, 

 down the mid-line of the back from crown to root of tail, is a 

 dark stripe, and then on either side there is a succession of 

 narrow, longitudinal stripes alternating light and dark; the 

 lightest colored stripe is the lowest of the lateral stripes; 

 sides grizzled chestnut or rufous; a whitish patch back of ears, 

 whitish stripes above and below eye; top of head grayer than 

 sides of body; tail, which is about as long as head and bod3% 

 moderately bushy, mixed black and ochraceous buff. 



Underparts. — Everywhere whitish, the pelage slate-colored 

 at base and showing through to give grayish appearance to 

 underparts; underside of tail rufous, the hairs banded with 

 black and tipped with ochraceous buff. 



Young.— Like adults, striped, but color pattern less con- 

 trasting and colors weaker. 



Measurements.— Total length, 8.5-9.5 inches; tail verte- 

 brae, 3.5-4 inches; hind foot, 1.35 inches. 



Geographical Distribution.- Western North America. Un- 

 fortunately, detailed geographical ranges of these Chipmunks, 

 based upon all the available records, have not been published 

 and hence the distributional data given in this handbook must 

 be considered as provisional. Mr. A. H. Howell, of the U. S. 

 Biological Survey, has worked out the distribution of the 

 genus, based upon more than 10,000 specimens, and it is 

 hoped that his studies will soon be in published form. 



Food.— Seeds, nuts, buds, fruit of many varieties, some 

 insect and animal food, such as birds' eggs. 



Enemies.— Snakes, Hawks, Weasels, Foxes, Coyotes, 

 Badgers, and Wildcats. 



Species and Subspecies of the Genus Eutamias 



This genus is a very large one, containing no less than 

 fifty-seven forms, according to the most recent publication 

 of Mr. A. H. Howell. » The differences between many of the 

 closely related forms are so subtle that they would be of little 

 value to the laymen, and lack of space forbids setting them 



I Howell; Journ. Mamm., Aug. 1922, p. 183-185. 

 226 



