Part 27

1955. Palynology in southern North America, Part 4: Pleistocene Climate in Mexico. Bull. Geol. Soc. America, 66:521-530, 6 figs., 1 pl., 1 table, May.

SIMPSON, G. G.

1945. The principles of classification and a classification of mammals. Bull. Amer. Mus. Nat. Hist., 85:xvi + 350, October 5.

1950. History of the fauna of Latin America. Amer. Sci., 38(3):361-389, 10 figs.

SMITH, H. M.

1949. Herpetogeny in Mexico and Guatemala. Ann. Association Amer. Geogr., 39:219-238, 1 fig., 1 table, September.

SPRAGUE, J. M.

1941. A study of the hyoid apparatus of the cricetinae. Jour. Mamm., 22:296-310, 5 figs., August 14.

STICKEL, L. F., and STICKEL, W. H.

1949. A Sigmodon and Baiomys population in ungrazed and unburned Texas prairie. Jour. Mamm., 30:141-150, 3 tables, May 23.

STUART, L. C.

1954. A description of a subhumid corridor across northern central America, with comments on its herpetofaunal indicators. Contrib. Lab. Vert. Biol., Univ. Michigan, 65:1-26, 6 maps, 6 pls., March.

TAMAYO, JORGE L.

1949. Atlas Geografico general de Mexico, con cartas fisicas, biologicas, demograficas, sociales, economicas, y cartogramas, Mexico, 24 maps, December 12.

THOMAS, O.

1888. On the small mammals of Duval County, Texas. Proc. Zool. Soc. London, pp. 443-450.

TRUE, F. W.

1894. On the relationships of Taylor's Mouse, Sitomys taylori. Proc. U. S. Nat. Mus., 16:757-758, February 7.

TWENTE, J. H., and BAKER, R. H.

1951. New records of mammals from Jalisco, Mexico, from barn owl pellets. Jour. Mamm., 32:120-121, 1 table, February 15.

VAN GELDER, R. G.

1959. A taxonomic revision of the spotted skunks (Genus Spilogale). Bull. Amer. Mus. Nat. Hist., 117(5):229-392, 47 figs., 32 tables, June 15.

WHITE, J. A.

1951. A practical method for mounting the bacula of small mammals. Jour. Mamm., 32:125, February 15.

1953. The baculum in the chipmunks of western North America. Univ. Kansas Publ., Mus. Nat. Hist., 5:611-631, 19 figs., December 1.

WILSON, R. W.

1937. Pliocene rodents of western North America. Carnegie Inst. Washington, Publ. 487:21-73, 2 figs., July 23.

WOOD, A. E., and WILSON, R. W.