240 THEOUGH THE MACKENZIE BASm 



inclined to gray, and about 5 inches long, was repeatedly 

 seen by him at Fort McMnrray, but nowhere else on this 

 side, although not unconunon in 'New Caledonia, British 

 Columbia, where the people speak of it as the " small 

 wood rat." 



WiHiTE-FooTED OE Deee Mouse — Peroiuyscus areticus 

 (Mearns). 



Although we failed to secure any specimens of this 

 mouse at Fort Anderson, it may still be discovered in the 

 country to the northward of Forts Liard, Simpson, Resolu- 

 tion, Eae, and Eig Island, from which points numerous 

 examples were obtained by Messrs. Eoss and Kennicott, and 

 forwarded to the Smithsonian Institution in the years 1860 

 to 1862. Mr. Moberly mentions the existence in the region 

 of Athabasca and Peace rivers of a brown wood mouse, 

 which destroys martens and other fur animals caught in 

 dead-fall traps. 



I incline to think that this mouse ranges farther north 

 than the several Mackenzie River District posts (Forts 

 Simpson, Liard, Big Island, Rae, and Resolution), from 

 which specimens were forwarded to Washington by Messrs. 

 Kennicott, Ross, Kirkby, Clarke, Reid, Brass, and Mac- 

 kenzie in the early sixties of the last century. From the 

 description given, I think Mr. P. Deschambeault met with 

 this species, both at Isle a la Crosse and at Lac du Brochet 

 post, situated at the north-eastern end of Reindeer Lake. 



Red-backed Mouse — Evotomys gapperi (Vigors). 



A fairly large number of examples of this species were 

 collected by the Eskimos on the polar shores of Liverpool 

 and Franklin bays, and in the adjacent country of the lower 

 Anderson and Mackenzie rivers. Some were also taken in 



