Part I, xxxii + 757, pls. 17-60, 35 figs. in text, July 14.

DALQUEST, W. W.

1948. Mammals of Washington. Univ. Kansas Publ., Mus. Nat. Hist., 2:1-444, 140 figs. in text, April 9.

DAVIS, W. B.

1939. The Recent mammals of Idaho. The Caxton Printers, Caldwell, Idaho, 400 pp., 2 full page half tones, 33 figs. in text, April 5.

DURRANT, S. D.

1952. Mammals of Utah, taxonomy and distribution. Univ. Kansas Publ., Mus. Nat. Hist., 6:1-549, 91 figs. in text, 30 tables, August 10.

ELLERMAN, J. R.

1941. The families and genera of living rodents. Volume II. Family Muridae. The British Museum. xii + 690 pp., 50 figs. in text, March 21.

FINDLEY, J. S.

1954. Competition as a possible limiting factor in the distribution of _Microtus_. Ecology, 35:418-420, July.

HALL, E. R., and E. L. COCKRUM

1952. Comments on the taxonomy and geographic distribution of North American microtines. Univ. Kansas Publ., Mus. Nat. Hist., 5:293-312, November 17.

1953. A synopsis of the North American microtine rodents. Univ. Kansas Publ., Mus. Nat. Hist., 5:373-498, 149 figs. in text, January 15.

HIBBARD, C. W.

1940. A new Pleistocene fauna from Meade County, Kansas. Trans. Kansas Acad. Sci., 43:417-425, December 23.

HOWELL, A. B.

1926. Anatomy of the wood rat. Monogr. Amer. Soc. Mamm. No. 1, x + 225 pp., 35 figs., Williams and Wilkins Co., Baltimore.

SNYDER, D. P.

1954. Skull variation in the meadow vole (_Microtus p. pennsylvanicus_) in Pennsylvania. Annals of the Carnegie Museum, 33:201-234, September 21.

WARREN, E. R.

1942. The mammals of Colorado. Univ. Oklahoma Press, xviii + 330 pp., 50 pls.

_Transmitted June 30, 1955._