90 NORTH AMERICAN FAUNA. [no. if.. 



At Big Spring, in Shasta Valley, where they abound, W. H. Osgood 

 saw several climb up on a beam and enter an opening in a granary. 



Callospermopliilus chrysodeirus ^Merriani. (4ol(len-niaiitI<'d (Jround 

 Squirrel. 



One of the most abundant and conspicuous mammals of the moun- 

 tain, where they were seen daily from the manzanita belt up to timber- 

 line, and where 52 specimens were collected. At Sisson they are rare, 

 but 2,000 feet higher are fViirly common, as they are also in Squaw Creek 

 Valley at the south base of the mountain. In the lir forest they make 

 their homes under logs or about the roots of trees, but in the neighbor- 

 hood of timberline live in burrows under tlie rocks, often in slide rock, 

 associated with small colonies of conies. At low altitudes they are 

 usually unwary and maybe easily killed with the 'auxiliary' barrel, 

 but in the neighborhood of timberline they are so exceedingly shy it 

 is dirticult to approach within gunshot. At our canq) among the alpine 

 hemlocks on upper Squaw Creek they first kept at long range, but find- 

 ing us harmless gradually overcame their fear, and finally, toward 

 the end of the season, came to be one of the most persistent of camp 

 robbers, stealing bread and other eatables. At the same time they 

 never came freely and boldly as did their associates, the chipmunks, 

 but always stole in silently and if possible kept out of sight. 



This species goes into winter quarters nuich later than its relatives in 

 the Rocky Mountain region. On Shasta it was seen daily near timber- 

 line until after the middle of September and a few were noticed on 

 warm days as late as September 24, but all those secured during the 

 latter part of the mouth were young of the year. Between Wagon 

 Camp and Sisson they were seen as late as September 20. 



Eutamias amcenus (Allen). Klamath Chipmunk. 



Abundant in the chaparral of the lower slopes aiul thence up through 

 the forest to timberline. Fifty-three specimens were obtained at vari- 

 ous j)oints on the mountain. At Wagon Camp they were common 

 and were seen picking unrii>e serviceberries the latter ]»art of 'Tnly. 

 At the south base of the mountain one was killed as low down as 

 Warmcastle Soda Springs in Squaw Creek Valley. In the forest they 

 live mostly about logs aiuI stuinps and are quite fearless, but along 

 the upper edg(^ of timber, where they live among the bare rocks, they 

 are much more wary. 



Eutamias senex (Allen). Allen Chipmunk. 



Abundant m the Shasta lir belt and ranging down to Sisson and 

 Warmcastle Soda Springs at the base of llie mountain and up to tlui 

 upper lim.it of continuous timber, though ])('rha]>s not to extreme tim- 

 berline. Sixty-eight s]>ecimens were secured. 



At Wagon Camp they wer(> common and were usually associated with 

 their small cousin, A', ((iiui )iiis. Tliey are more arboreal than the other 



