Feb., 1912. Mammals of Illinois and Wisconsin — Cory. 31 



Subfamily SCIURIN^. 

 Genus SCIURUS. 

 Subgenus PARASCIURUS. 

 Sciurus niger nifiventer (Geoffroy). Western Fox Squirrel. 



Subgenus NEOSCIURUS. 

 Sciurus carolinensis Gmelin. Southern Gray Squirrel. 

 Sciurus carolinensis leucotis (Gapper). Northern Gray Squirrel. 



Subgenus TAMIASCIURUS. 

 Sciurus hudsonicus loquax Bangs. Southern Red Squirrel. 



Genus TAMIAS. 

 Tamias striatus (Linn.). Chipmunk. 

 Tamias striatus griseus Mearns. Gray Striped Chipmunk. 



Genus EUTAMIAS. 



Eutamias horealis neglectus (Allen). Little Chipmunk. 



Subfamily MARMOTIN^. 

 Genus CITELLUS. 



Subgenus ICTIDOMYS. 

 Citellus tridecemlineatus (Mitchill). Striped Ground Squirrel, "Gopher." 

 Citellus franklini (Sabine). Franklin's Ground Squirrel, "Gray Gopher." 



Genus MARMOTA. 



Marniota monax (Linn.). Woodchuck. 



Marmota monax canadensis (Erxleben). Canada Woodchuck. 



Family CASTORIDiE. Beavers. 

 Genus CASTOR. 

 Castor canadensis Kuhl. Beaver. 



Family MURID.F:. Rats and Mice. 

 Subfamily MURIN.E. 

 Genus MUS. 

 Mus musculus Linn. House Mouse. 



Genus EPIMYS. 

 Epimys norvegicus (Erxleben). Norway Rat, House Rat. 

 [Epimys rattus (Linn.). Black Rat.] 



Subfamily CRICETINiE. 

 Genus PEROMYSCUS. 



Subgenus PEROMYSCUS. 



Peromyscus leucopus (Rafin.). White-footed Mouse. 



Peromyscus leucopus noveboracensis (Fischer). Northern White-footed Mouse. 



Peromyscus maniculatus hairdi (Hoy and Kennic.ott). Prairie White-footed 



Mouse. 

 Peromyscus maniculatus gracilis (LeConte). Canadian White-footed Mouse. 

 Peromyscus gossypinus megacephalus (Rhoads). Western Cotton Mouse. 



