use of subspecific nomenclature is justified in this case,
although not completely unambiguous.

LITERATURE CITED

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ANDERSON, R. M.

1943. A prior name for the bean mouse revived. Canadian Field-Nat.,
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ANDERSON, S.

1954. Subspeciation in the montane meadow mouse, Microtus montanus,
in Wyoming and Colorado. Univ. Kansas Publ., Mus. Nat. Hist.,
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BAILEY, V.

1900. Revision of American voles of the genus Microtus. N. Amer.
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1920. Identity of the bean mouse of Lewis and Clark. Jour. Mamm.
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1927. A biological survey of North Dakota. N. Amer. Fauna, 49:vi+
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1932. Mammals of New Mexico. N. Amer. Fauna, 53:1-412, 22 pls., 57
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BAIRD, S. F.

1858. Explorations and surveys for a railroad route from the
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DALQUEST, W. W.

1948. Mammals of Washington. Univ. Kansas Publ., Mus. Nat. Hist.,
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DAVIS, W. B.

1939. The Recent mammals of Idaho. The Caxton Printers, Caldwell,
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DURRANT, S. D.

1952. Mammals of Utah, taxonomy and distribution. Univ. Kansas
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ELLERMAN, J. R.

1941. The families and genera of living rodents. Volume II. Family
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FINDLEY, J. S.

1954. Competition as a possible limiting factor in the distribution
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HALL, E. R., and E. L. COCKRUM

1952. Comments on the taxonomy and geographic distribution of North
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1953. A synopsis of the North American microtine rodents. Univ.
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HIBBARD, C. W.

1940. A new Pleistocene fauna from Meade County, Kansas. Trans.
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