VoL. Iv.] Motes on a Collection of Mammats. 319 
were the only ones secured. They were taken at a little over 
7500 feet elevation, among bushes and granite boulders along 
the western slope of Mt. Tallac. I donot remember seeing any 
at Summit Station, the type locality of the species, but several 
large gray chipmunks were seen at the foot of Donner Pass, 
along the western end of Donner Lake. Their size was notice- 
ably greater than that of the smaller chipmunks, amenus and 
Frater, which I had been collecting on the summit. 
Of three specimens two are adult females collected August 4 
and 12, apparently just beginning to moult. The other, taken 
August 12, is a young male, nearly full grown and somewhat 
richer in coloration. 
4. Tamias amenus Allen. Klamath Chipmunk. 
Of the seven specimens of Zamzas referable to this species, 
three were taken at Summit Station and four on Mt. Tallac. 
They are mostly in ragged pelage, and some seem to approach 
Tamias frater, though in all the specimens the pale buff base of 
the hairs on the upper surface of the tail is enough to distinguish 
them easily. 
This is the smallest species of Zamzas collected in the Sierra 
Nevada; two specimens, No. 58¢, and No. 629, were collected 
on bare rocks on Mt. Tallac, at g500 feet elevation. It was 
found on trees, on the ground, and among rocks. Numerous 
small chipmunks were seen on a rocky, scantily-wooded hillside 
some miles west of Summit Station and at about 1000 
feet lower altitude, but as no specimens were taken, they might 
have been either amwnus or frater. 
5. Zamias frater Allen. Sierra Nevada Chipmunk. 
Seven specimens of this form were taken, five at Summit 
Station and two on Mt. Tallac. These, like most of the other 
chipmunks collected in the Sierra Nevada, are in ici aan 
e and consequently very difficult to determ Some 
approach exceedingly close to Zamias OMS OI) in color- 
ation. The habits of this species appeared similar to those of 
7. amenus. 
6. Tamias minimus pictus Allen. Desert Chipmunk. 
This species was found only in the Carson Valley, Nevada. 
It was common in the sage brush, sometimes a long distance away 
