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.

1956. The frogs of the hylid genus _Phrynohyas_ Fitzinger, 1843. Misc.

Publ. Mus. Zool. Univ. Michigan, 96:1-47, pls. 1-6. February 21.

1958. A monographic study of the colubrid snake genus _Leptodeira_.

Bull. Amer. Mus. Nat. Hist., 114:1-152, pls. 1-31. February 24.

1963a. A review of the Middle American tree frogs of the genus Ptychohyla. Univ. Kansas Publ. Mus. Nat. Hist., 15:297-349, pls. 11-18. October 18.

1963b. A new species of tree frog, genus _Phyllomedusa_, from Costa Rica.

Rev. Biol. Trop., 11(1):1-23. October.

1964. A review of the frogs of the Hyla bistincta group. Univ. Kansas Publ. Mus. Nat. Hist., 15:469-491. March 2.

1965. Frogs of the _Hyla taeniopus_ group. Copeia, no. 2:159-168.

June 25.

DUELLMAN, W. E. and KLAAS, L. T.

1964. The biology of the hylid frog _Triprion petasatus_. Copeia, no. 2:308-321. June 30.

DUMeRIL, A. M. C. and BIBRON, G.

1841. Erpetologie Generale ou histoire naturelle complete des reptiles, vol. 8, 792 pp.

DUNN, E. R.

1931a. The amphibians of Barro Colorado Island. Occas. Papers Boston Soc. Nat. Hist., 5:403-421. October 10.

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

October 30.

1944. Herpetology of the Bogota area. Rev. Acad. Colombiana Cien.

Exact., Fis. Nat., 6:68-81.

FOUQUETTE, M. J., JR.

1960. Isolating mechanisms in three sympatric tree frogs in the Ca.n.a.l Zone. Evolution, 14:484-497. December.

FUNKHOUSER, ANNE

1957. A review of the neotropical tree-frogs of the genus _Phyllomedusa_. Occas. Papers Nat. Hist. Mus. Stanford Univ., 5:1-89. April 1.

GADOW, H.

1908. Through southern Mexico. London, Witherby and Co. xvi + 527 pp.

GAIGE, H. T., HARTWEG, N. and STUART, L. C.

1937. Notes on a collection of amphibians and reptiles from eastern Nicaragua. Occas. Papers Mus. Zool. Univ. Michigan, 357:1-18.

October 26.

GOIN, C. J.

1961. Synopsis of the genera of hylid frogs. Ann. Carnegie Mus., 36:5-18. July 14.

GOSNER, K. L.

1960. A simplified table for staging anuran embryos and larvae with notes on identification. Herpetologica, 16:183-190. September 23.

GRIFFITHS, I.

1959. The phylogeny of _Sminthillus limbatus_ and the status of the Brachycephalidae (Amphibia, Salientia). Proc. Zool. Soc. London, 132:457-487, pls. 1-4.

GUZMaN, E. J. and CSERNA, Z.

1963. Tectonic History of Mexico. Amer. a.s.soc. Petrol. Geol., Mem. 2:113-129.

HECHT, M. K.

1962. A reevaluation of the early history of the frogs. Part I. Syst.

Zool., 11:39-44. March.

1963. A reevaluation of the early history of the frogs. Part II. Syst.

Zool., 12:20-35. March.