WESTERN CHIPMUNK 



these enemies the Prairie-dog has Httle defense. Its powers of 

 reproduction, however, keep its numbers up in spite of such 

 attacks. The number of young in a Htter is usually four but 

 may run as high as six or eight, and the young are born early in 

 Alay. The young are first seen about the burrows in late 

 Alay or early June in the north, early May in Texas and 

 after a few weeks show a rapid rate of growth. Bv the end 

 of the summer they are only slightly smaller than the parents. 



Genus Eutamias 



Dentition: Incisors, i ; Canines, 2; Premolars, f ; Molars, 



Western Chipmunk. 



22. 



-Eutamias quadrivittatus 



and related forms 

 Names.— Western Chipmunk; Chipmunk. Plate XXIV 

 General Description.-Smaller, more slender than the 

 Eastern Chipmunk, with finer stripes and lacking the bright- 



FiG. 52. Western Chipmunk 



colored, reddish rump and hips. Ears narrow, erect and 

 covered with short hairs; head somewhat rounded; active and 

 dert m behavior; terrestrial in habit. 



Color.— Adults: Sexes colored alike. 



Summer pelage brighter than that of winter and spring, but 

 dentical m pattern and essential coloration. 

 225 



