1943. Corollary and commentary for "Climate and Evolution." Amer. Midl. Nat., 30:241-253. July. SCHMIDT, O. 1857. Diagnosen neuer Froesche des zoologischen Cabinets zu Krakau. Sitzungb. Konigl. Akad. Wiss. Math.-Natur. Cl., 24(1):10-15. March. 1858. Deliciae Herpetogicae Musei Zoologici Cracoviensis. Denkschr. K. K. Akad. Wiss. Math.-Natur. Cl., 14(2):237-258, pls. 1-3. SMITH, H. M. 1953. A new subspecies of the treefrog _Hyla phaeota_ Cope of Central America. Herpetologica, 8:150-152. January 30. SMITH, H. M. and TAYLOR, E. H. 1950. Type localities of Mexican reptiles and amphibians. Univ. Kansas Sci. Bull., 33:313-380. March 20. STARRETT, P. 1960. A redefinition of the genus _Smilisca_. Copeia, no. 4:300-304. December 30. STEBBINS, R. C. and HENDRICKSON, J. R. 1959. Field studies of amphibians in Colombia, South America. Univ. California Publ. Zool., 56:497-540. February 17. STOKELY, P. S. and LIST, J. C. 1954. The progress of ossification in the skull of the cricketfrog _Pseudacris nigrita triseriata_. Copeia, no. 3:211-217. July 29. STUART, L. C. 1935. A contribution to a knowledge of the herpetology of a portion of the savanna region of central Peten, Guatemala. Misc. Publ. Mus. Zool. Univ. Michigan, 29:1-56, pls. 1-4, 1 map. October 1. 1948. The amphibians and reptiles of Alta Verapaz, Guatemala. Misc. Publ. Mus. Zool. Univ. Michigan, 69:1-109. June 12. 1950. A geographic study of the herpetofauna of Alta Verapaz, Guatemala. Contr. Lab. Vert. Biol., 45:1-77, pls. 1-9, 1 map. May. 1954. Herpetofauna of the southeastern highlands of Guatemala. Contr. Lab. Vert. Biol., 68:1-65, pls. 1-4. November. 1958. A study of the herpetofauna of the Uaxactun-Tikal area of northern El Peten, Guatemala. Contr. Lab. Vert. Biol., 75:1-30. June. 1961. Some observations on the natural history of tadpoles of _Rhinophrynus dorsalis_ Dumeril and Bibron. Herpetologica, 17:73-79. July 11. 1964. Fauna of Middle America, _in_ Wauchope, R. and West, R. C. (Eds.). Handbook of Middle American Indians, vol. 1, Univ. Texas Press, Austin, 570 pp. TAYLOR, E. H. 1942. New Caudata and Salientia from Mexico. Univ. Kansas Sci. Bull., 28:295-323. November 15. 1952. The frogs and toads of Costa Rica. Univ. Kansas Sci. Bull., 35:577-942. July 1. 1954. Additions to the known herpetological fauna of Costa Rica with comments on other species. No. I. Univ. Kansas Sci. Bull., 36:597-639. June 1. TAYLOR, E. H. and SMITH, H. M. 1945. Summary of the collections of amphibians made in Mexico under the Walter Rathbone Bacon Traveling Scholarship. Proc. U. S. Natl. Mus., 95:521-613, pls. 18-32. June 30. TIHEN, J. A.