Part 20

1859. Reptiles of the boundary. United States and Mexican boundary survey. Washington, D. C., p. 35, pl. 41.

BALDAUF, R. J.

1959. Morphological criteria and their use in showing bufonid phylogeny. Jour. Morph., 104:527-560. May.

BARBOUR, T.

1923. Notes on reptiles and amphibians from Panama. Occas. Papers Mus. Zool. Univ. Michigan, 129:1-16. January 25.

BLAIR, W. F.

1959. Call structure and species groups in U. S. treefrogs (Hyla). Southwest. Nat., 3:77-89. June 1, 1959.

1962. Non-morphological data in anuran classification. Syst. Zool., 11:72-84. June.

1963. Evolutionary relationships of North American toads of the genus Bufo: A progress report. Evolution, 17:1-16. March.

BOGERT, C. M.

1960. The influence of sound on the behavior of amphibians and reptiles. in Lanyon, W. E. and Tavolga, W. N. (Eds.) Animal sounds and communication, pp. 137-320.

BRATTSTROM, B. H.

1957. The phylogeny of the Salientia based on skeletal morphology. Syst. Zool., 6:70-74. June.

BREDER, C. M., Jr.

1946. Amphibians and reptiles of the Rio Chucunaque drainage, Darien, Panama, with notes on their life histories and habits. Bull. Amer. Mus. Nat. Hist., 86:375-436, pls. 42-60. August 26.

BROCCHI, P.

1877. Note sur quelques batrachiens hylaeformes recuilles au Mexique et au Guatemala. Bull. Soc. Philom. Paris, ser. 7, 1:122-132.

CARVALHO, A. L.

1954. A preliminary synopsis of the genera of American microhylid frogs. Occas. Papers Mus. Zool. Univ. Michigan, 555:1-19, pl. 1. July 16.

COCHRAN, D. M.

1961. Type specimens of reptiles and amphibians in the United States National Museum. Bull. U. S. Nat. Mus., 220:xv + 291 pp.

COPE, E. D.

1862. Catalogues of the reptiles obtained during the explorations of the Parana, Paraguay, Vermejo and Uraguay rivers.... Proc. Acad. Nat. Sci. Philadelphia, 14, pt. 9:346-359.

1865. Third contribution to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 17:185-198. October.

1871. Ninth contribution to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 23, pt. 2:200-224.

COPLAND, S. J.

1957. Australian tree frogs of the genus Hyla. Proc. Linnean Soc. New South Wales, 82, pt. 1:9-108. September.

DUELLMAN, W. E.