APPENDIX. 315 



the tips. The tail is slightly clothed with short strong bris- 

 tles. 



The specimen brought by Mr. Townsend, is thicker, and 

 about an inch longer. It has a white stripe about two lines 

 wide, commencing under the chin, and running in a somewhat 

 irregular line along the under surface of the body, to within an 

 inch and a half of the insertion of the tail; there is also a white 

 streak commencing on the forehead and extending along the 

 snout." * * ****** 



Inhabits the Columbia river. — Towns. 



Townsend's Meadow Mouse. 



Avicola*TownsencUi, (Bach.) Journal Acad. Nat. Sciences, 

 vol. 8, part I. Hash-sko, of the Chinook Indians. 



" Body cylindrical, head rather small, whiskers nearly all 

 white, intermingled with a few black hairs ; eyes small ; teeth 

 large, yellow ; ears large, broad, extending a little beyond the 

 fur ; feet of moderate size, toes like the rest of this genus; thumb 

 protected by a rather short, acute nail ; fur on the back, about 

 three lines long, much shorter beneath. Tail scaly, sparingly 

 covered with soft brown hair, a few white hairs at its extremity; feet 

 clothed to the nails with short, brown, adpressed hairs; claws brown; 

 fur above lead color from the roots to near the tips, which are 

 dark brown ; beneath cinereous. 



Length of head and body, 6 inches, lines 



Length of tail, 2 " 6 " 



Fore feet to point of nails, 9 " 



From heel to point of nail, 1 " " 



Breadth of ear, 5 " " 

 Inhabits the Columbia river. — Towns. 



Oregon Meadow Mouse. 



Arvicola Oregoni, (Bach.) Journal Acad. Nat. Sciences, Vol. 

 8, part I. 



" This diminutive species is another of the discoveries of Mr. 

 Townsend. 



Head of moderate size, body slender, eyes very small for this 

 genus ; ears nearly naked, concealed by the fur ; feet small ; 

 whiskers the length of the head, white and black, the latter pre- 



