LITERATURE CITED

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Cei, J.M. 1963. Some precipitin tests and preliminary remarks on the systematic relationships of four South American families of frogs. Bull. Serological Mus., 30:4-6.

Cei, J.M. and V. Erspamer 1966. Biochemical taxonomy of South American amphibians by means of skin amines and polypeptides. Copeia, no. 1:74-8.

Cochran, D. M. 1955. Frogs of southeastern Brazil. Bull. U.S. Natl. Mus., 206; xvi + 423 pp.

Cole, C. J. 1966. The chromosomes of Acris crepitans blanchardi Harper (Anura: Hylidae). Copeia, no. 3:578-580.

Cope, E. D. 1864. Contributions to the herpetology of tropical America. Proc. Acad. Nat. Sci. Philadelphia, 16:166-181. 1866. On the structures and distribution of the genera of arciferous Anura. Jour. Acad. Nat. Sci. Philadelphia, ser. 2, 6:67-112.

Duellman, W. E. 1967. Additional studies on chromosomes of anuran amphibians. Syst. Zool., 16:38-43.

Duellman, W. E. and C. J. Cole 1965. Studies of chromosomes of some anuran amphibians (Hylidae and Centrolenidae). Syst. Zool., 14:139-143.

Duméril, A. H. 1853. Memoire sur les batraciens anoures de la famille des hylaeformes ou rainettes comprenant la description d'un genre nouveau et de onze espèces nouvelles. Ann. Sci. Nat., ser. 3, 19:135-179.

Dunn, E. R. 1931. The herpetological fauna of the Americas. Copeia, no. 3:106-119.

Funkhouser, A. 1957. A review of the Neotropical tree-frogs of the genus Phyllomedusa. Occas. Papers Nat. Hist. Mus., Stanford Univ., 5:1-90. 1962. A new Phyllomedusa from Venezuela. Copeia, no. 3:588-590.

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Lutz, B. 1966. Pithecopus ayeaye, a new Brazilian hylid with vertical pupils and grasping feet. Copeia, no. 2:236-240.

Miranda-Ribeiro, A. de 1923. As Phyllomedusas do Museu Paulista. Bol. Mus. Nac, Rio de Janeiro, 1:3-6. 1926. Notas para servirem ao estudo dos gymnobatrachios (Anura) brasileiros. Arch Mus. Nac., Rio de Janeiro, 27:1-227, pls. 1-22.

Noble, G. K. 1931. The biology of the Amphibia. McGraw-Hill, New York, 577 pp.

Peters, W. C. H. 1872. Über eine, zwei neue Gattungen enthaltende, Sammlung von Batrachiern des Hrn. Dr. O. Wucherer aus Bahia, so wie übereinige neue oder weniger bekannte Saurier. Monatsb. Akad. Wiss. Berlin, 1872:768-776.

Savage, J. M. 1966. The origins and history of the Central American herpetofauna. Copeia, no. 4:719-766.

Savage, J. M. and W. R. Heyer 1967. Variation and distribution in the tree-frog genus Phyllomedusa in Costa Rica, Central America. Beitr. Neotrop. Fauna, 5:111-131.

Schmidt, K. P. 1943. Corollary and commentary for "Climate and Evolution." Amer. Midl. Nat., 30:241-253.

Stuart, L. C. 1950. A geographic study of the herpetofauna of Alta Verapaz, Guatemala. Contr. Lab. Vert. Biol., Univ. Michigan, 45:1-77, pls. 1-9.

Wagler, J. G. 1830. Näturliches System der Amphibien, mit vorangehender Classification der Saügethiere und Vögel. München, vi + 354 pp., 9 pls.

Transmitted April 18, 1968.