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



Subfamily SCIURIN^. 

 Genus SCIURUS. 

 Subgenus PARASCIURUS. 

 Sciuriis 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 borealis ueglectus (Allen). Little Chipnumk. 



Subfamily MARMOTIX.E. 

 Genus CITELLUS. 



Subgenus ICTIDOMYS. 

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

 Citellus franklin i (Sabin'e). 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 MURIN.E. 

 Genus MUS. 



Mus musculus Linn. House Mouse. 



Genus EPIMYS. 

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

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



Subfamily CRICETIN.'E. 

 Genus PEROMYSCUS. 



Subgenus PEROMYSCUS. 

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



Peromyscus leucopus novehoracensis (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. 



