KEY TO LAND MAMMALS OF NORTHEASTERN NORTH AMERICA 6j 



14 Arctomys ignavus Bangs: Labrador woodchuck, p. 89 



Genus Sciuropterus F. Cuvier : p. 90 



15 Sciuropterus volans (Linnaeus) : southern flying squirrel, p. 90 



Represented by : 

 Sciuropterus volans volans (Linnaeus) : southern^y- 

 ing squirrel, p. 90 



16 Sciuropterus sabrinus (Shaw) : northern flying squirrel, p. 90 



Represented by : 

 Sciuropterus sabrinus sabrinus (Shaw): Hudsonian 



flying squirrel, p. 91 

 Sciuropterus sabrinus macrotis Mearns : Canadian 

 flying squirrel, p. 91 

 Family CASTORIDAE : beavers, p. 91 

 Genus Castor Linnaeus: p. 35 



17 Castor canadensis Kuhl: American beaver, p. 92 



Represented by : 

 Castor canadensis canadensis Kuhl : northeastern 



beaver, p. 92 

 Castor canadensis carolinensis Rhoads : southeast- 

 ern beaver, p. 92 

 Family MURIDAE : mice, p. 92 

 Subfamily MURINAE : old world mice, p. 93 

 Genus Mus Linnaeus : p. 94 



18 Mus musculus Linnaeus : house mouse, p. 94 



19 Mus rattus Linnaeus : black rat, p. 95 



20 Mus decumanus Pallas: house rat, p. 95 



Subfamily CRICETINAE : new world mice, p. 93 

 Genus Reithrodontomys GigHoli : p. 95 



21 Reithrodontomys lecontii (Audubon & Bachman) : harvest mouse 



P- 95 

 Represented by : 

 Reithrodontomys lecontii impiger Bangs: Virginia 

 harvest mouse, p. 96 

 Genus Oryzomys Baird : p. 96 



22 Oryzomys palustris (Harlan) : ricefield mouse, p. 96 



Represented by : 

 Oryzomys palustris palustris (Harlan) : northern ricefield 



mouse, p. 96 

 Genus Peromyscus Gloger : p. 96 

 Subgenus Peromyscus Gloger : p. 96 



