154 Mearm Mainland Forms of Eastern Deermouse. 



at the base of the hair, and the general color above is broccoli- 

 brown in summer, and cinnamon or yellowish wood-rbrown fine 

 ly sprinkled with black in winter. 



Peromyscus leucopus leucopus (Rafmesque). 



KENTUCKY DEERMOUSE. 



In summer coated with short hairs: color broccoli-brown above, finely 

 sprinkled with black, sparsely on the sides and thickly in a broad 

 median dorsal area: ears scantily coated, hair brown, with scarcely percep 

 tible hoary edges: eyelids bordered with black: feet scantily coated, the 

 skin appearing between the hairs: tail plainly showing annvili above and 

 below, and so scantily coated that it does not appear distinctly bicolored 

 or slightly penciled at tip: underparts gray partly concealed by white 

 tips to the hairs. 



In winter more heavily coated: color yellowish wood-brown above, 

 white below, with the gray underfur appearing between the white tips 

 of the hairs; tail very slightly penciled, not very sharply bicolored, and 

 with annul! seldom wholly concealed: feet and ears not well coated. 



Measurements. Total length, 180 mm.: caudal vertebrse, 80; hind 

 foot, 21; ear above crown, 12.5. 



Peromyscus leucopus noveboracensis (Fischer). 



NEW YORK DEERMOUSE. 



In summer the whole animal is more heavily coated than in true leu 

 copus, the skin of the feet being concealed by the hair; tail bicolor, with 

 annuli usually concealed, and the tip well penciled: ears also a little 

 more heavily coated: upperparts wood-brown instead of broccoli-brown. 



In mnter the coat is very full and long; tail moderately penciled, 

 sharply bicolor, heavily coated, with the annuli entirely concealed: 

 ears and feet well coated, the former with hoary edges and almost bushy 

 at base, and the latter pure white: upperparts yellowish wood-brown; 

 ears and upperparts generally more decidedly lined with black; pelage 

 of underparts very dense, and white almost to the base. 



Measurements. Length, 185 mm.: tail vertebra 1 , 85: hind foot, 21; ear 

 above crown, 13.5. 



Peromyscus leucopus minnesotae subsp. nov. 



MINNESOTA DEKRMOUSE. 



Type. No. 82,717, United States National Museum Collection. Adult 

 female, collected at Fort Snelling, Hennepin County, Minnesota, Novem 

 ber 30, 1890, by Edgar A. Mearns. Original No. 1181. 



