THE MAMMALS OF MOUNT MAZAMA. 
221 
of about 7,800 ft. (2,375 meters). A few days latter, when we 
had moved camp to the northwest part of the rim, Mr. Bailey 
caught one at the north base of Glacier Peak. At Diamond Lake 
Mr. Preble secured another specimen in a trap set in thick grass at 
the south end of the lake. 
Since the type specimen of Phenaconiys orophilus was ob- 
tained by Mr. Bailey and myself in the Salmon River Mountains of 
Idaho, in 1890, additional specimens have been secured in the Saw 
Tooth Mountains, Idaho; Bear Tooth Mountains and Mary's Lake 
region, Montana; Yellowstone National Park, Wyoming; the Blue 
Mountains and Cascade Range, Oregon. In the Cascades we ob- 
tained specimens, during the past season, at Mount Hood, Diamond 
Lake and Crater Lake, showing that the animal inhabits suitable 
spots at high altitudes all along the range. 
Mount Mazama Red-bacpted Mouse. Evotomys mazama, 
Merriam. 
This new species is common in the Hudsonian Zone at Crater 
Lake, where a number were caught in traps set among logs, both in 
the dark hemlock forest and in the thick growth of plants near the 
small cold streams. The species seems to be partly arboreal and 
somewhat diurnal, as usual in this genus. I saw one crawl along 
on the loosened bark of a log in broad daylight, and saw another 
jump down from a dead tree, but could not be certain whether it was 
outside of the bark or had come out from beneath a large scale of 
loose bark. Mr. Preble saw one in the spruce woods near the head 
of Anna Creek, where several were secured,- 
Short- nosed Red-backed Mouse. Evotomys ohscnrus^ 
Merriam. 
This is another new species. It is based on specimens collected 
at Prospect by Mr. Preble. One was caught in a damp mossy place 
near Rogue river Falls, the others in grassy places near the river. 
A single specimen was secured by Mr. Bailey on the west slope of 
Mount Mazama below Glacier Peak. The animal is considerably 
darker than E. mazama. 
