80 CALIFORNIA MAMMALS. 



hind the ear large, white and distinct in summer, less distinct in 

 winter; in summer the dark stripes of the back are prout brown, 

 more or less tinged with rusty, the outer pair shading into the 

 burnt umber of the sides ; in winter all these stripes and the sides 

 are grayer and duller, middle pair of light stripes brownish gray, 

 the outer pair broad and white; lower parts white shading into 

 the gray of the lower part of the sides; tail rather short and 

 narrow, russet or cinnamon rufous below, indistinctly bordered 

 and broadly tipped with black, edged with yellow ; tail above 

 rusty black, the russet band showing through more or less. In 

 badly worn spring pelage the stripes on the back may be nearly 

 or quite obliterated, leaving the back plain. 



Length 2IO mm. (8.25 inches) ; tail vertebras 95 (3.75); 

 hind foot 33 (1.40); ear from crown 16 (.63). 



Type locality, San Bernardino Mountains, California. 



San Bernardino Chipmunks are common in the higher parts 

 of the San Bernardino and San Jacinto Mountains. They are 

 better climbers than most other species of this genus, frequently 

 running up the smaller trees and sitting on a knot or limb and 

 chipping at the passer-by. The breeding season is May and June, 

 The number of young appears to be four and five. 



Eutamias speciosus callipeplus Merriam. (Beautiful — 



mantle. ) 



MOUNT PINOS CHIPMUNK. 



Similar to speciosus; dark dorsal stripes narrower; outer 

 white stripe broader and white spot behind the ear larger; in 

 summer pelage the sides are cinnamon rufous and the rump is 

 tinged with rusty; in winter the sides are gray with a rusty tinge 

 and the back stripes are grayer. 



Type locality. Mount Pinos, Ventura County, California. 



This subspecies appears to be limited to the small area of 

 Mount Pinos at the extreme southern end of the San Joaquin 

 Valley and to the upper part of the western slope of the southern 



