AMPHIBIANS AND R7<:PTILES OF BEXAfi COUNTY 



Baird, Spencer F. and Charles Girard. 



Catalogue of North American Reptiles, Part 1, Serpents, 

 Wash., 1853. 



Baird, Spencer F. 



Reptiles of the Boundary. Rept. U. S. Mexican Boundary 

 Survey, Wash., 1859. 



Cope, E. D. 



On the Zoological Position of Texas Bull. U. S. Nat. Mas.. 



No. 17, 1880. 



The Batrachia of North America Bull. U. S. Nat. Mus., 



No. 34, 1889. 



The Crocodilians, Lizards and Snakes of North America 



Report U. S. Nat. Mus., 1898. 



Yarrow, H. C. 



Check-List of North American Reptilia and Batrachia 

 Bull. U. S. Nat. Mus., No. 24, 1882. 



