White-footed Moust 



!. White-footed Mouse. Peromyscus leucopus (Rafinesque). De^ 

 scription and range as above. 



B. The Boreal White-footed Mice 



Tail equal to or larger than the head and body, with a con- 

 spicuous pencil of hairs at the tip. 



2. Canadian White-footed Mouse. P. canadensis Miller. Larger 

 and much grayer than the above, and fawn-coloured indi- 

 viduals rather rare, the longer tail and conspicuous tuft of 

 usually whitish hairs on the end serve readily to distin- 

 guish it. 

 Range. Cold evergreen forests of Canada and New England, 

 southward along the mountains. In northern New York 

 and elsewhere this and the more southerly white-footed 

 mouse occur together, the two being easily distinguishable. 



5, Hudson ian White-footed Mouse. P. canadensis abietorum 

 Bangs. Always dark gray above at all ages, never show- 

 ing the russet tints. 

 Range. A northern form of the last replacing it in the 

 spruce and fir forests of Quebec and Nova Scotia north- 

 ward. 



4. Dusky White-footed Mouse. P. canadensis umbrinus Miller, 



Smaller than P. canadensis and yellow with the dusky shad- 

 ing on face, ears and tail deeper. 

 Range. Replaces the above to the north of Lake Superior. 



5. Cloudland White-footed Mouse. P. canadensis nubiterrce 



(Rhoads). Smaller and darker than P. canadensis, with a 

 distinct blackish dorsal band. 

 Range. Replaces P. canadensis in the spruce forests of the 

 southernmost Alleghanies. 



C. The Cotton Mice 



Tail shorter than the head and body, without a distinct 

 terminal pencil of hairs. Underparts with a decided gray cast 

 owing to the greater extent of the gray bases of the hairs. 

 These are distinctly southern as the last were northern. 



6. Cotton Mouse. P. gossypinus (Le Conte). Colour similar to 



the white-footed mouse, but darker and less tawny, and 

 underparts distinctly gray, as compared with the pure 

 white of P. leucopus. 

 Range. Lowlands of the Atlantic slope from North Carolina 

 to Georgia, replaced South and West by allied forms. 



7. Rhoads' Cotton Mouse. P. gossypinus mississippiensis Rhoads. 



Paler, with dusky stripe on back and ring around the eye, 

 less defined. 



^35 



