1910] Check-list of Wisconsin Mammals. 25 



Epimys norvegicus (Erxleben). Norway Eat. 1 



Mus deeumanus Lapham, 1853. — Strong, 1883. — Snyder, 1902. 

 Mus norvegicus Jackson, 1908. 



Peromyscus maniculatus gracilis (Le Conte). Canada White-footed 

 Mouse. 

 Peromyscus canadensis Jackson, 1908. 



Peromyscus maniculatus bairdi (Hoy & Kennicott). Michigan White- 

 footed Mouse. 

 Hesperomys bairdii Strong, 1SS3. 

 Hesperomys michiganensis Strong-, 1883. 2 

 Peromyscus bairdi Snyder, 1902. — Hollister, 1909. 

 Peromyscus michiganensis Jackson, 1908. 



Peromyscus leucopus noveboracensis (Fischer). Deer Mouse. 

 Mus leucopus Lapham, 1853. 

 Hesperomys leucopus Strong, 1883. 

 Peromyscus leucopus Snyder, 1902. 

 Peromyscus leucopus noveboracensis Jackson, 1908. 



Evotomys gapperi (Vigors). Eed-backed Vole. 



Arvicola gapperi Strong, 18S3. 



Evotomys gapperi Snyder, I902.--Jackson, 1908. 



Microtus pennsylvanicus (Ord). Meadow Mouse. 



Arvicola riparius Lapham, 1853. — Strong, 1883. 

 Microtus pennsylvanicils Snyder, 1902. — Jackson, 1908. 



Microtus ochrogaster (Wagner). Prairie Meadow Mouse. 

 Arvicola Mrsutus Lapham, 1S53. 3 

 Arvicola austcrus Strong, 18S3. 

 Microtus austcrus Snyder, 1902. 

 Microtus ochrogaster Jackson, 1908. 



Fiber zibethicus (Linnaeus). Muskrat. 



Fiber zibethicus Lapham, 1853. — Strong, 1883. — Snyder, 1902.— 

 Jackson, 1908. 



1 For use of namo Epimys for the rats, see Miller, Proc. Biol. Soc. Wash., 

 XXIII, p. 5S, Apr. 19, 1910.' 



2 Though the Mus michiganensis of Audubon and Bachman is a true 

 synonym of Peromyscus leucopus noveboracensis, as shown by Osgood in 

 his recent revision of the genus (N. Am. Fauna, No. 28, p. SI, 1909), this 

 reference belongs under bairdi. 



3 Arvicola Mrsutus Emmons is a synonym of Microtus pennsylvanicus, 

 but the name is here used by Lapham for Hoy's "Beaver Field Mouse", which 

 is undoubtedly ochrogaster, as he also includes Arvicola riparius, the "Marsh 

 Meadow Mouse", in his list. 



