18 
JOURNAL OF MAMMALOGY 
numbers occur in buckbrush on the ridges. At Hompeg Falls a number were 
found in July, 1914, in lowland fir forest, especially in openings in the forest, and 
on rock slides near the bottom of the canyon. 
Most of these squirrels go into aestivation early in the summer, but they 
remain active much later than do the Townsend squirrels. At Prescott several 
were seen as late as July 11 in 1914. In the Blue Mountains they were seen as 
late as July 28. 
Citellus townsendii. Townsend Ground Squirrel. — Abundant in early June, 
1914, in the sagebrush east of Wallula. A number also occurred in the bunch- 
grass of the hills to the south. These animals were very fat in preparation for 
their approaching aestivation. On Eureka Flat they were numerous in bunch- 
grass and in sagebrush areas. Throughout northern Walla Walla County they 
are numerous over the bunchgrass hills. In the Touchet Valley east of Prescott 
a few live in gardens and in open places in the timber along the river, but in gen- 
eral they avoid brushy or timbered areas. A few were noted April 2, 1909, at 
Wawawai in the grassland at the bottom of the Snake River Canyon, on the north 
side of the river. 
A female taken at Prescott March 28, 1913, contained a number of unformed 
embryos. Partly grown young were trapped at that place on April 17 and 19 
of 1913. Half-grown young were common near Wallula during the first week of 
June, 1914. These squirrels come out of hibernation very early in spring and 
tracks may often be seen on the snow. They go into aestivation early in sum- 
mer, and in 1914 none were seen at Prescott after June 25. 
Eutamias amoenus amoenus. Klamath Chipmunk. — Rare in the timber 
along the Touchet River in the prairie area as far down as Prescott. One was 
taken April 20, 1913, in brush two miles east of Prescott. In the Blue Moun- 
tains they are numerous in every sort of brushy habitat, but seem to be most 
numerous in the brush near the tops of the ridges. At Hompeg Falls numbers 
were seen in lowland fir, western larch, and Douglas spruce forests at the bot- 
tom of the canyon and in yellow pine forest on the lower slopes. On Butte Creek 
a few occurred in the brush and deciduous timber along the stream. On the 
higher ridges they were abundant in alpine fir, western larch, and Douglas spruce 
forests. 
One watched July 24, 1914, near Hompeg Falls, seated himself on a small 
twig in the top of a service-berry bush while he ate some of the partially dried 
fruit. The fore feet were used to assist in handling the food. Another watched 
August 2 on top of the ridge near Twin Buttes Ranger Station was feeding on 
grass seeds. He would cut off a grass stem as high up as he could reach and 
then pass the head sideways through his mouth, removing the seeds and discard- 
ing the chaff as the head of grass passed through. In this case also the fore feet 
were used to handle the material. 
Callospermophilus chrysodeirus chrysodeirus. Golden-mantled Ground Squir- 
rel. — A number were seen about the rocky slopes and in yellow pines on the sides 
of the canyon at Hompeg Falls in July and August, 1914. A few were seen in 
buckbrush, in open alpine fir forest, in western larch forest, and in open Douglas 
spruce forest on the higher ridges of the mountains. They seem to prefer par- 
tially open areas and the neighborhood of rocks. 
