KEY TO LAND MAMMALS OF NORTHEASTERN NORTH AMERICA 97 



SPECIES OF PEROMYSCUS 



Tail about half of total length, ears large, colors 



dull or light P. cauadecsis 



Tail less than half of total length, ears moderate, colors 

 bright or dark 

 Tail slightly less than half of total length, color strongly 



russet ~ P. leucopus 



Tail considerably less than half of total length, color 



dull, not strongly russet P. maniculatus 



Peromyscus canadensis (Miller) Canadian white-fooied mouse 



Tail 4:6% to 60% of total length, with a conspicuous tuft of hair at tip ; ears and 

 eyes large. Adults never reddish drown ahove (young bluish gray) ; belly hairs 

 always snowy white at ti])S. (canadensis; N. Lat., Canadian) 



This mouse is an inhabitant of the forests of the Canadian and Hud- 

 sonian zones of eastern America. It is divisible into four subspecies, 

 three of which occur within our limits. 



SUBSPECIES OP PEROMYSCUS CANADENSIS 



Adults very pale, grayish brown P. canadensis abietorum 



Adults not pale, grayish brown 



Adults yellowish brown P. canadensis canadensis 



Adults dull brownish P. canadensis nubiterrae 



Peromyscus canadensis abietorum Bangs Hudsonian white- 

 footed mouse 

 1896 Peromyscus canadensis abietorum Bangs, Proc. biolog. soc. 

 Washington. 9 Mar. 1896. 10: 49. (Lake Edward, Quebec) 



Adults pale grayish Irown ahove, never fuscous or yellowish. Total length, 

 190 (7i); tail vertebrae, 100 (4); hind foot, 21.5 (ii). (abietorum; Lat., of 

 the firs) 



The Hudsonian white-footed mouse inhabits the spruce forests of 

 Quebec, New Brunswick and Nova Scotia. It probably occurs in north- 

 ern Maine. 



Peromyscus canadensis canadensis Miller Canadian white-footed 



mouse 

 1893 Sitomys americanus canadensis Miller, Proc. biolog. soc. 



Washington. 20 June 1893. 8 : 55. (Peterboro, Madison co. N. Y.) 

 1896 Peromyscus canadensis Bangs, Proc. biolog. soc. Washington. 9 



Mar. 1896. 10 : 49. 



Adults dull yellowish hrotvn above. Total length, 190 (7f ) ; tail veterbrae, 

 100 (4) ; hind foot, 21.5 (tI). (canadensis; N. Lat., Canadian) 



The Canadian white-footed mouse inhabits the Canadian zone and 

 locally the cooler parts of the transition zone in the eastern United 

 States and Canada. It is a characteristic forest animal. 



