1866. On the structures and distribution of the genera of the arciferous Anura. J. Acad. Nat. Sci. Philadelphia, n. ser., 6:67-112.
1877. Tenth contribution to the herpetology of tropical America. Proc. Amer. Philos. Soc., 17:85-98.
1878. New genus of Cystignathidae from Texas. Amer. Nat., 12:252-53.
1879. Eleventh contribution to the herpetology of tropical America. Proc. Amer. Philos. Soc., 18:261-77.
1885. A contribution to the herpetology of Mexico. Ibid., 22:379-404.
Davis, W. B., and J. R. Dixon
1957. Notes on Mexican amphibians, with description of a new Microbatrachylus. Herpetologica, 13:145-47.
1965. Amphibians of the Chilpancingo Region, Mexico. Ibid., 20:225-33.
Díaz de León, J.
1904. Indice de los Batracios que se enquentran en la Republica Méxicana. Imprenta de Ricardo Rodriquez Romo. Aguascalientes. 40 pp.