212 Firtp Museum or Natura History — Zoodtocy, Vor. XI. 
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Map illustrating approximate distribution of Red-backed Mice or Red-backed Voles (Evotomys) 
in eastern United States. 
Evotomys gapperi (Vicors). Type locality — Vicinity of Lake Simcoe, Ontario. 
Description as previously given. 
Evotomys g. loringi Battry. (Proc. Biol. Soc. Wash., XI, 1897, p. 125.) Type 
locality — Portland, Traill County, North Dakota. Smaller and somewhat 
brighter colored than gapperi and with smaller skull. 
Evotomys g. ochraceus MILLER. (Proc. Bost. Soc. Nat. Hist., XXVI, 1894, p. 193.) 
Type locality — Mt. Washington, Coos Co., New Hampshire. Larger and 
darker than gapperi. 
Evotomys g. rhoadsi StoNE. (Amer. Nat., XXVII, 1893, p. 55.) Type locality — 
May’s Landing, Atlantic Co., New Jersey. About the size of gapperi, but darker 
and with shorter tail. 
Evotomys proteus BAILEY. (Proc. Biol. Soc. Wash., XI, 1897, p. 
locality—Hamilton Inlet, Labrador. 
137.) Type 
Largest of our northeastern forms. 
Evotomys carolinensis MERRIAM. (Amer. Jour. Sci., 3rd ser., XXXVI, 1888, p. 460.) 
Type locality — Roan Mountain, Mitchell Co., North Carolina (altitude 6,000 
ft.). Dorsal stripe dark chestnut and not sharply defined, shading into color 
of sides. 
