 | Cold-blooded vertebrates from Florida, the West Indies, Costa Rica, and eastern Brazil
H W Fowler (1915) Proceed ings of the Academy of Natural Sciences, Philadelphia 67: 244-269 |
 | Some reptiles and amphibians from Virginia, North Carolina, Tennessee and Alabama
E R Dunn (1920) Proceedings of the Biological Society of Washington 33: 129-138 |
 | Notes on the herpetology of New Mexico, with a list of species known from that state
John Van Denburgh (1924) Proceedings of the California Academy of Sciences 13: 189-230 |
 | The helminths parasitic in the Amphibia and Reptilia of Houston, Texas, and vicinity
Paul D Harwood (1932) Proceedings of The United States National Museum 81: 1-71 |
 | The coachwhip snake Masticophis flagellum (Shaw): taxonomy and distribution
Larry David Wilson (1971) Tulane Studies in Zoology and Botany 16(2): 31-99 |
 | Snakes of Western Chihuahua
W W Tanner (1985) Great Basin Naturalist 45: 615-676 |
 | An ecogeographic analysis of the herpetofauna of the Sierra San Pedro Mártir region, Baja California, with a contribution to the biogeography of the Baja California herpetofauna
Welsh Jr and Hartwell H (1988) Proceedings of the California Academy of Sciences 46: 1-72 |
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