OREGON MEADOW-MOUSE. 
233 
HABITS. 
We are unacquainted with the habits of this species, but should judge 
from its form resembling that of Le Conte's pine mouse ( J1 . pinetorum) 
that instead of having galleries on the surface of the earth, as is the general 
habit of the Meadow-Mice, this species lives principally under ground, and 
only comes to the surface at night, to seek its food ; it evidently feeds more 
on roots than on seeds. 
GEOGRAPHICAL DISTRIBUTION. 
This Arvicola was captured in Oregon, near the Columbia river. 
GENERAL REMARKS. 
Although its head is rather smaller in proportion than that of Le 
Conte’s pine mouse ( Arvicola pinetorum), and its body differing from that 
animal in colour, this species is nevertheless very similar to it in form, 
more especially in the almost naked lobe of the ear ; and seems to be the 
representative of that Atlantic species in Oregon. 
vol. hi. — 30 
