FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 31 



SUBFAMILY SCIURIN^. 



GENUS SCIURUS. 

 SUBGENUS PARASCIURUS. 



Sciurus niger rufiventer (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. 

 1 Tamias striatus griseus MEARNS. Gray Striped Chipmunk. 



GENUS EUTAMIAS. 



Eutamias boreal is neglectus (ALLEN). Little Chipmunk. 



SUBFAMILY MARMOTIN^E. 

 GENUS CITELLUS. 



SUBGENUS ICTIDOMYS. 



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

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



GENUS MARMOTA. 

 Marmota monax (LiNN.). Woodchuck. 

 Marmota monax canadensis (ERXLEBEN). Canada Woodchuck. 



FAMILY CASTORID^. BEAVERS. 



GENUS CASTOR. 

 Castor canadensis KUHL. Beaver. 



FAMILY MURID.E. RATS AND MICE. 

 SUBFAMILY MURING. 



GENUS MUS. 

 Mus musculus LINN. House Mouse. 



GENUS EPIMYS. 



Epimys noruegicus (ERXLEBEN). Norway Rat, House Rat. 

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



SUBFAMILY CRICETIN^E. 



GENUS PEROMYSCUS. 



SUBGENUS PEROMYSCUS. 



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



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



Peromyscus maniculatus bairdi (HoY AND KENNICOTT). Prairie White-footed 



Mouse. 



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

 Peromyscus gossypinus megacephalus (RHOADS). Western Cotton Mouse. 



