FEB., 1912. MAMMALS OF ILLINOIS AND WISCONSIN CORY. 217 



H/crofus drummonai 







Microtus breweri 







tflcrotus nesophilus 







M/irofus shatlucki 







*l;'cro(us tcrraenovae 



Map illustrating approximate range of the Meadow Mouse (Microtus pennsylvanicus) , together 

 with the type localities of the species and subspecies belonging to the genus. 



Microtus pennsylvanicus (ORD). Type locality Meadows below Philadelphia, 



Pennsylvania. Description as previously given. 

 Microtus p. nigrans RHOADS. (Proc. Acad. Nat. Sci. Phila., 1896 (1897), p. 307.) 



Type locality Currituck, North Carolina. Slightly larger and darker than 



pennsylvanicus; hind feet larger. 

 Microtus p. acadicus BANGS. (Amer. Nat., XXXI, 1897, p. 239.) Type locality 



Digby, Nova Scotia. Smaller than pennsylvanicus and somewhat paler. 

 Microtus p. fontigenus (BANGS). (Proc. Biol. Soc. Wash., X, 1896, p. 48.) Type 



locality Lake Edward, Quebec. Smaller than pennsylvanicus, with skull 



shorter and wider; bullae large. 

 Microtus drummondi (Auo. & BACH.). (Quadrupeds of N. Amer., Ill, 1854, p. 166.) 



Type locality Vicinity of Jasper House, Alberta, Canada. Paler, smaller 



and more slender than pennsylvanicus. 

 Microtus terranova (BANGS). (Proc. Biol. Soc. Wash., IX, 1894, p. 129.) Type 



locality Codroy, Newfoundland. Slightly larger than pennsylvanicus, with 



larger hind feet; color more yellowish; a median line on belly. 

 Microtus breweri (BAIRD). (Mammals N. Amer., 1857, p. 525.) Type locality 



Muskeget Island, Massachusetts. Paler and grayer than pennsylvanicus; size 



somewhat larger. 

 Microtus nesophilus BAILEY. (Science, N. Ser., VIII, 1898, p. 783.) Type locality 



Great Gull Island, New York. Darker than pennsylvanicus; skull shorter and 



wider. 

 Microtus shattucki (HOWE). (Proc. Port. Soc. Nat. Hist., II, 1901, p. 201.) Type 



locality Tumble Down Dick Island, Dark Harbor, Penobscot Bay, Maine. 



Similar in color to pennsylvanicus but larger. 



