94 NORTH AMERICAN FAUNA. [No. 16. 
Peromyscus gambeli (Baird). Common White-footed Mouse. 
Common on all, or nearly all, parts of the mountain from Sisson up 
to and possibly a little above extreme timberline. One hundred speci- 
mens were collected. 
In choosing their homes these mice are easily suited, for they seem 
equally contented among the dense vegetation in damp parts of the 
bottoms of canyons and among the bare lava rocks and pumice soil ot 
the driest timberline slopes. Some were caught also in the heather 
meadows bordering the little streams in the Hudsonian zone. At 
Sisson R. T. Fisher found them rather rare except in damp woods 
along Cold Creek, where he caught a number under roots and stumps 
close to the water. 
Peromyscus boyli (Baird). 
Exceedingly rare, or else of such peculiar habits that it escaped 
observation. Only a single specimen was obtained on Shasta. It was 
caught at the extreme upper limit of the Canadian zone (alt. 7,800 feet) 
on Squaw Creek, August 9, by Walter K. Fisher. Others were secured 
at Fall River Lake, in the Transition zone, southeast of the base of the 
mountain. 
Peromyscus truei (Shf.). Big-eared Mouse. 
Collected in Little Shasta Valley by Walter K. Fisher, who found it 
living among bushes of Ceanothus cuneatus. 
Neotoma fuscipes Baird. Round-tail Wood Rat. 
Not found on Shasta, but common in some of the low valleys at its 
base. Their characteristic stick houses were seen in the juniper forest 
at the southern end of Shasta Valley, in the chaparral near Gazelle, 
and in several places in the Scott Mountains (Bailey). In Little Shasta 
Valley one was collected September 19 (Osgood). 
Neotoma cinerea Ord. Bushy-tail Wood Rat. 
Rather scarce. Only four specimens were obtained—two in Mud 
Creek Canyon near the mouth of Clear Creek, and two high up on 
Squaw Creek (alt. 8,800 feet). Of those caught in Mud Creek Canyon, 
one was trapped at the end of an old log, the other at the entrance to 
an aplodontia burrow. Shasta abounds in the kinds of ledges and 
clitts usually inhabited by this species, but, except at rare intervals, no 
traces of the animals were found. 
Microtus californicus (Peale). California Vole. 
Not obtained by us except in Shasta Valley, where six specimens 
were secured in September by W. H. Osgood and R. T. Fisher. Their 
runways were found in very wet places in the tules at Big Spring, in 
Shasta Valley, and along Little Shasta Creek. Walter K. Fisher 
secured specimens along Shasta River, northeast of Edgewood. 
