Part 22

GUZMAN, E. J. and CSERNA, Z.

1963. Tectonic History of Mexico. Amer. Assoc. 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.

JOHNSON, C.

1959. Genetic incompatibility in the call races of Hyla versicolor Le Conte in Texas. Copeia, no. 4:327-335. December 30.

LLOYD, J. J.

1963. Tectonic history of the south Central-American Orogen. Amer. Assoc. Petrol. Geol., Mem. 2:88-100.

MALDONADO-KOERDELL, M.

1964. Geohistory and paleogeography of Middle America, in Wauchope, R. and West, R. C. (Eds.). Handbook of Middle American Indians, vol. 1, Univ. Texas Press, Austin, 570 pp.

MASLIN, T. P.

1963. Notes on some anuran tadpoles from Yucatan, Mexico. Herpetologica, 19:122-128. July 3.

MITTLEMAN, M. B. and LIST, J. C.

1963. The generic differentiation of the swamp treefrogs. Copeia, no. 2:80-83. May 29.

NOBLE, G. K.

1931. The biology of the amphibia. McGraw Hill, New York, 577 pp.

ORTON, G. L.

1957. The bearing of larval evolution on some problems in frog classification. Syst. Zool., 6:79-86. June.

PETERS, W.

1863. Mittheilungen uber neue Batrachier. Monats. Konigl. Akad. Wiss. Berlin, pp. 445-471.

1873. Uber eine neue Schildkroetenart, Cinosternon Effeldtii und einige andere neue oder weniger bekannte Amphibien. Monats. Konigl. Akad. Wiss. Berlin, pp. 603-618, pl. 5. October 16.

RIVERO, J. A.

1961. Salientia of Venezuela. Bull. Comp. Zool., 126:1-207. November.

SAVAGE, J. M. and CARVALHO, A. L.

1953. The family position of Neotropical frogs currently referred to the genus Pseudis. Zoologica, 38:193-200.

SCHMIDT, K. P.

1941. The amphibians and reptiles of British Honduras. Zool. Ser. Field Mus. Nat. Hist., 22:475-510. December 30.