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sticks. Another peculiar characteristic it has is that of "trading;" it 

 never takes anything without leaving something in its place. For this 

 reason it is called the "trade rat" hy the settlers. In size it is about as 

 large as a common gray squirrel. 

 Evotomys nivarius Bailey. 



This alpine species of mouse was seen only near the Happy Lake 

 country. It lives in colonies. In color its dorsal surface is strongly 

 marked with chestnut, sides of body gray and buff, under parts white, 

 tail bi-eolor. The tail is half as long as the body. 

 Microti!* macrurus Merr. 



I found a dead specimen on the trail, from Crescent Lake to the Sole- 

 duck Hot Springs. It seems to be rare. 

 Microtus mows us Elliot. 



A common species. 

 Microtus oregoni Bach. Meadow Vole. 



Not many individuals of this species were seen by the writer. 

 TJiomomys melanops Merr. Gopher. 



This animal is a common pest in hay fields. In color it is pale brown 

 to reddish, with considerable black about the head and face. 

 Z'apus inrperator Elliot. Kangaroo Mouse. 



This is an abundant species, but hard to catch. In color its sides are 

 buff, back dark, under parts white. 

 Sorex vagrans Baird. Shrew. 



Only three individuals of this species were seen. 

 Lepus wasliingtoni Baird. Washington Babbit. 



Description : Male — Brown from head to tail on back and sides. Chin 

 and lower jaw white to light brown, neck brown beneath, rest of under 

 parts white, legs brown without, front legs white on -outside, front of 

 hind legs white, hair reddish brown on flanks just in front of each hind 

 leg, tip of toes of each foot white. Tail short, ending in a tuft of dark 

 hair, color of hair above dark brown, light brown beneath. Anal tuft 

 nearly white. Hind legs from knee to foot on back dark to dark brown. 

 Each front leg has a small linear white spot on front of knee. 



Length of head 3.125 in., thickness of head at base of skull 2.625 in., 

 width of base of lower jaw 1.875 in., width of ear at widest part 1.375 in., 

 length of middle front toe 1 in., length of hind leg 11.125 in., length of hind 

 foot and leg beneath the knee 4,875 in., length of hind foot 1.875 in., length 



