THE MAMMALIA OF CANADA. 81 



Arvicola Oregoni, Bach. 



Oregon Meadow Mouse. 

 Southern British Columbia. 



Arvicola noveboracensis, {Raf.) Rich. 

 Sharp-nosed Meadow Mouse. 

 Aj'vicola Drummondii, Aud. and Bach. 

 On the eastern slope of the Rocky Mountains about the 

 head of the Athabasca River. 



MUS DECUMANUS, Pdllas. 



Grej or Norway Rat. 

 Throughout the more settled parts of the Dominion. In 

 the North- West Territories, found sparingly along the lines ot 

 railway. 



Mus RATTUS, Linn. 

 Black Rat. 

 Recorded from botli the Atlantic and Pacific sea-boards, but 

 it has never reached far into the interior. 



Mus MUSCULUS, Linn. 

 House Mouse. 

 Common in all the more settled parts of the country, but in 

 Manitoba and the North- West Territories not yet found away 

 from the lines of railway. 



Synaptomys Cooperi, Baird. 



Found both in Minnesota and Alaska and so will doubtless 

 be found in Manitoba and the North-West Territories. 



Myodes obensis, Brants. 

 Tawny Lemming. 

 Arvicola helvolus, Rich. 

 Arvicola ti'imucronatus, Rich. 



Found around Great Bear Lake, and in the Rocky Moun- 

 tains as far south as Lat. 56^. 

 6 



