Geographic Variation in Red-backed Mice (Genus Clethrionomys) of the Southern Rocky Mountain Region

Transcriber's Notes.
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In the course of the preparation of a synopsis of the North American terrestrial microtines by one of us (Cockrum), and the completion of a Master's thesis on the geographical variation of the red-backed mice of Wyoming by the other (Fitch) we had occasion to study the red-backed mice of the southern Rocky Mountain region (see figure 1). Results of these studies are the recognition of two heretofore unnamed subspecies of the red-backed mouse in the southern Rocky Mountain region, and a clarification of the taxonomic status of two additional kinds.
Clethrionomys gapperi galei (Merriam)
1890. Evotomys galei Merriam, N. Amer. Fauna, 4:23, October 8.
1931. Clethrionomys gapperi galei , Hall, Univ. California Publ. Zool., 37:6, April 10.
1897. Evotomys gapperi galei , Bailey, Proc. Biol. Soc. Washington, 11:126, May 13.
Type locality. --Ward, 9500 feet, Boulder County, Colorado.
Range. --The Rocky Mountains of extreme southern Alberta, Montana, northwestern and southern Wyoming, and north and central Colorado.