104 NEW YORK STATE MUSEUM 



The northern pine mouse inhabits the upper austral zone and lower 

 part of the transition zone east of the Alleghanies. It generally occurs 

 in colonies, which may be detected by the mole-like ridges thrown up by 

 the animals. 



Microtus terraenovae Bangs Newfoundland vole 

 1894 Arvieola terraenovae Baugs. Proc. biolog. soc. Washington. 27 



July 1894. 9 : 129. (Codroy, Newfoundland) 

 1896 [Microtus] terraenovae Miller, North American fauna. 23 July 



1896. no. 12, 66. 

 1900 Microtus terraenovae Bailey, North American fauna. 6 June 

 1900. no. 17, p. 25. 

 Above umber brown, slightly sprinkled with blackish hairs ; below light gray ; 

 tail well haired, blackish above, light gray below; a pale dull tawny patch on 

 each side of muzzle at roots of whiskers. Total length, 180 (6f ) ; tail vertebrae, 

 50 (2) ; hind foot, 24 (1). (terraenovae; N. Lat., of Newfoundland) 

 The Newfoundland vole is confined to the island of Newfoundland. 



Microtus chrotorrhinus (Miller) Rock vole 

 Light brown above, thickly sprinkled with blackish hairs beneath ; a conspic- 

 uous ochraceous patch on each side of muzzle; h'mS, foot about 21 (it), 

 (chrotorrhinus; Gk., color nose) 



The rock vole inhabits heavy spruce woods and rock cavities in the 

 Hudsonian zone of eastern North America. Two well marked sub- 

 species are known, both of which occur within our limits. 



SUBSPECIES OF MICROTUS CHBOTOEKHINUS 



Muzzle patch dark tawny ochrace- 

 ous, contined to extremity of 

 muzzle M. chrotorrhinus chrotorrhinus 



Muzzle patch pale tawny ochrace- 

 ous, suffusing whole face M. chrotorrhinus ravus 



Microtus chrotorrhinus chrotorrhinus (Miller) Southern rock vole 



1894 Arvieola chrotorrhinus Miller, Proc. Boston soc. nat. hist. 24 

 Mar. 1894. 26: 190. (Mt Washington, New Hampshire) 



1896 Microtus chrotorrhinus Bangs, Proc. biolog. soc. Washington. 9 

 Mar. 1896. 10:49. 



1900 Microtus chrotorrhinus Bailey, North American fauna. 6 .Tnne 

 1900. no. 17, p. 58. 

 General color of upper parts umber brown ; muzzle patches deep tawny ochra- 

 ceous strict??/ coB;/ime<2 to aides of muzzle. Total length, 165 (6i) ; tail vertebrae, 

 50 (2) ; hind foot, 20 (IP), (chrotorrhinus; Gk., color nose) 



The southern rock vole is locally distributed in the Hudsonian zone 

 and in cold situations in the Canadian zone of Quebec, New Brunswick, 

 the White mountains, Adirondacks and Catskills. 



