KEY TO LAND MAMMALS OF NORTHEASTERN NORTH AMERICA 69 



34 Microtus pinetorum (Le Conte) : pine mouse, p. 103 



Represented by ; 

 Microtus pinetorum scalopsoides (Audubon and 

 Bachman) : northern pine mouse, p. 103 

 Subgenus Microtus Schrank: p. 103 



35 Microtus terraenovae Bangs: Newfoundland vole, p. 104 



^6 Microtus chrotorrhinus (Miller) : rock vole, p. 104 



Represented by : 

 Microtus chrotorrhinus chrotorrhinus (Miller) : 



southern rock vole, p. 104 

 Microtus chrotorrhinus ravus Bangs : Labrador rock 



vole, p. 105 



37 Microtus breweri (Baird) : Muskeget island vole, p. 105 

 T,2> Microtus enixus Bangs: Hamilton inlet vole, p. 105 



39 Microtus pennsylvanicus (Ord) : field mouse, p. 105 



Represented by : 



Microtus pennsylvanicus p e n n s y Ivan i c u s (Ord) : 

 common eastern field mouse, p. 106 



Microtus pennsylvanicus labradorius Bailey : 

 Labrador field mouse, p. 106 



Microtus pennsylvanicus fontigenus (Bangs) : north- 

 ern field mouse, p. 107 



Microtus pennsylvanicus acadicus Bangs : Acadian 



field mouse, p. 107 



40 Microtus nesophilus Bailey: Gull island mouse, p. 107 



Genus Phenacomys Merriam: p. 108 



41 Phenacomys celatus Merriam : large yellow-faced phenacomys, 



p. 108 



42 Phenacomys latimanus Merriam: small yellow-faced phenacomys, 



p. 108 



Genus Evotomys Coues: p. 109 



43 Evotomys ungava Bailey: ungava redbacked mouse, p. 109 



44 Evotomys carolinensis Merriam : Carolina redbacked mouse, 



p. 109 



45 Evotomys proteus Bangs: variable redbacked mouse, p. 110 



