14 
JOURNAL OF MAMMALOGY 
Hompeg Falls they were taken in lowland fir forest, in western larch forest, in 
yellow pine forest, and on rocky slopes. They were less common in heavy forest 
than in the more open brushy places and were very abundant on the rocky slopes, 
especially near low shrubs. On the high ridges between the Touchet and Wenaha 
Rivers white-footed mice were taken in alpine fir forest, in western larch forest, 
in Douglas spruce forest, and in buckbrush. In the canyon of Butte Creek 
several were trapped in the brush and timber along the stream. 
A female white-footed mouse heavy with young was taken March 27, 1908, 
in the bunchgrass hills near Prescott. A fully grown subadult male was taken 
May 24, 1914, in a farm building in the Touchet Valley east of Prescott. One 
old female taken on July 2, 1914, in the brush along the Touchet River near the 
same place contained four large embryos; another contained a mass of unformed 
embryos; while a third contained no embryos. Of two young females taken at 
the same time and place one contained four and the other five medium-sized 
embryos. On July 8, 1915, a nest containing the mother and five half-grown 
young was found in a building at this locality. The nest was constructed of 
small bits of cardboard, paper, sacks, cloth, and a few chicken feathers. The 
bottom of the nest contained much excreta. On September 13, 1909, a female 
taken in a stubble field in the Touchet Valley near Prescott contained two large 
embryos. Evidently these mice breed at least twice in each season in this re- 
gion, and the females may breed in the same season in which they are born. Of 
fourteen females examined in the Blue Mountains between July 22 and 26, 1914, 
none contained embryos. 
A captive subadult male studied at Prescott during the latter part of May, 
1914, elaborated a nest from cotton placed in the box. He readily ate rolled oats 
and nibbled at a raw potato. In eating small objects the body was supported 
on the hind legs and the fore feet used to handle the food and present it to the 
mouth. 
Peromyscus maniculatus artemisiae. Sagebrush White-footed Mouse. — 
Common at Pullman on the prairie hills, about rocks, in cultivated fields and 
orchards, in meadows, and in the brush and timber along streams. 
Neotoma cinerea occidentalis. Western Bushy-tailed Wood Rat. — Reported 
to be common about houses along the Walla Walla River east of Wallula; a young 
one taken in a cellar was seen on June 10, 1914. A nest was found. June 15 under 
a large rock in a ravine at the base of the hills southeast of Wallula. One was 
trapped in 1893 in a cellar in the prairie hills two miles southwest of Prescott; 
another was taken in 1910 in the cellar of a house beside the Touchet River two 
miles east of Prescott ; these animals lived in burrows dug in the soft dirt walls 
of the cellars. In the Blue Mountains wood rats are reported to be numerous 
about cabins. 
Evotomys gapperi saturatus. Dusky Red-backed Mouse. — Two were trapped 
in the summer of 1914 in lowland fir forest in the canyon near Hompeg Falls; on 
the ridges between the Touchet and Wenaha Rivers one was taken in thick 
buckbrush, one in western larch forest, and two in alpine fir forest in a small cove 
near the top of the ridge; along Butte Creek one was taken in a swampy place 
and one in the brush and timber along the stream. 
Microtus nanus canescens. Gray Meadow Mouse. — Numerous in the meadows 
and in brushy places along the Touchet River near Prescott. They do not seem 
