98 NORTH AMERICAN FAUNA. [No. 16. 
Perognathus mollipilosus Coues. Mountain Pocket-Mouse. 
Common in the manzanita chaparral, « little below Wagon Camp, 
where four were caught in July by R. T. Fisher. But the most extra- 
ordinary locality at which the species was found—and for that matter 
the most remarkable and abnormal place in which any species of the 
family has ever been found—is a subalpine pumice basin near timber- 
line at the head of Panther Creck, where Walter K. Fisher discovered 
it and caught two the night of July 18. Later, six more were secured 
at the same place. 
In Shasta Valley Vernon Bailey and W. H. Osgood found abundant 
signs of some species of Perognathus, but did not obtain specimens, 
The species is probably 7’. parrus, which is common in the adjacent 
Klamath Basin. 
Erethizon epixanthus Brandt. Porcupine. 
Apparently common, and yet not a specimen was obtained. Their 
characteristic gnawings on the trunks of small trees were seen at 
imany points around the mountain, usually in the Hudsonian or upper 
part of the Canadian zone. They were common among the dwarf 
timberline white-bark pines on the north sides of both Shasta and 
Shastina; and in a small forest of young Shasta firs between Mud 
Creek Canyon and Cold Creek. Near timberline we several times 
found small trees whose tops had been gnawed in winter when they 
protruded above the snow. In a single instance fresh tracks were 
seen in the trail between Wagon Camp and Squaw Creek Camp (by 
Vernon Bailey). And on August 4 our favorite mule came into camp 
with poreupine quills in his nose. OC. WH. Townsend found porcupines 
in surprising abundance in Lassen County, south of Shasta, in 1883 
and 1884, and gives an interesting account of their habits. 
Zapus trinotatus alleni Elliot. Sierra Jerboa. 
Fairly common in damp places on and near the mountain. Twenty 
specimens were collected—fifteen in the Canadian zone in Mud Creek 
Canyon near the mouth of Clear Creek (alt. 6,700 feet), two near the 
upper part of Mud Creek (alt. 7,900 feet), and three at Wagon Camp. 
One of the most attractive spots near Wagon Camp is a grove of 
ponderosa pines in which the ground is carpeted with strawberries 
and scarlet painted cups, mixed with ferns and scattered clumps of 
serviceberries. The soil, while not wet, receives enough moisture 
from the little streams that sink into the ground a few rods above to 
enable these plants to grow in such profusion that they form a con- 
tinuous meadow— Castilleja meadow’ we called it, from the abundance 
of painted cups. Here the jerboas abound. We saw several in the 
daytime, leaping about like frogs in the dense vegetation, and caught 
one or two in our hands, 
In Mud Creek Canyon, W. II. Osgood intorms me, they were also 
frequently seen in the daytime, in wet places under the white hellebore 
(Veratrum californicum). 
