394 



MONOGRAPHS OF NORTH AMERICAN RODENTIA. 



ilp?',: 



localities south of the Mexican boundary. To the westward it ranges to 

 the Pacific, from California northward to Alaska, and doubtless extends 

 northward to the limit of trees. It is extremely abundant in the wooded 

 mountainous portions of Colorado, where, as I am informed by Dr. Coucs, 

 wlio speaks from reports given iiim on the spot, it sometimes becomes a con- 

 siderable article of diet. The same naturalist also found it no less numer- 

 ous in the Sweetgrass Hills, or "Three Buttes" of Northen; Montana, where 

 numerous individuals were secured. Though chiefly a woodland animal, it 

 is not seldom seen ranging the prairie many miles from the nearest timber — 

 perhaps traveling from one feeding ground to anotiier. 



Tabi.k l.—\fca»urcmenln of eevcnieen tkulh of Ehkthizon doiisatus rar. doksatus. 



tp! 



* Id the Museum of Comparative Zoology, Cambridup, Mans. 



t From front edge of the iDtermaxilUrlea to the ocoipltal condyles. 



