6 Uiii:'crsity of Mich'ujan 



21. Epimys norvegicus (Erxleben). Norway Rat. 

 Specimens: Washtenaw. 



Observations: Wayne, Jackson, Huron. 



Records: Wayne, Jackson, Huron, Livingston, Oakland, Len- 

 awee. 



22. Epimys rattus (Linnaeus). Black Rat. Extinct in Michigan. 

 Records: Washtenaw, Wayne. 



23. Mus musculus (Linnaeus). House Mouse. 



Specimens: Washtenaw, Huron, Cheboygan, Cass, Chippewa, 

 Lenawee. 



Observations: Wayne, Jackson, Lenawee, Kalamazoo, Liv- 

 ingston. 



24. Peromyscus leucopus noveboracensis (Fisch.). Northern 



White-footed Deer Mouse. 

 Specimens: Washtenaw, Ottawa, Kalamazoo, Oscoda, Huron, 



Osceola, Cheboygan, Cass. 

 Observations: Oakland, Jackson, Livingston, Lenawee, Wayne. 

 Records: Wayne, Oakland, Jackson, Lenawee, Livingston, 



Crawford, Huron, Genesee, Berrien, Ingham, Montcalm. 



25. Peromyscus maniculatus (Wagner). Clouded White-footed 



Mouse. 

 Specimens: Keweenaw (Isle Royale). 



25. Peromyscus maniculatus gracilis (LeConte). Michigan Mouse. 

 Specimens: Oscoda, Ontonagon, Cheboygan, Dickinson, Chip- 

 pewa, Crawford, Iron. 



27. Peromyscus maniculatus bairdii (Hoy and Kenn.). Prairie 



White-footed Mouse. 

 Specimens: Washtenaw, Huron, Cass. 



28. Evotomys gapperi (Vigors). Red-backed Mouse. 

 Specimens: Ontonagon, D'ickinson, Cheboygan. 

 Records: Keweenaw (Isle Royale) (?). 



29. Microtus pennsylvanicus (Ord). Meadow Vole. 

 Specimens: Washtenaw, Oakland, Dickinson, Huron, Cass, 



Cheboygan, Chippewa. 

 Records: Crawford, Oscoda, Wayne, Genesee, Ingham, Mont- 

 calm, Gratiot, Livingston, Jackson, Lenawee, Osceola. 



30. Pitymus pinetorum scalopsoides (And. and Bach.). Northern 



Pine Mouse. 

 Specimens: Oakland. 

 Records: Ingham. 



