BioStor
 | Notes on Three Common New Jersey Turtles Charles H Rogers (1917) Copeia 47: 74-76 |
 | Poisonous Snakes in the Jungle Clarence R Halter (1917) Copeia 47: 76-76 |
 | Amphibians and Reptiles from El Valle de Anton, Panama E R Dunn (1933) Occasional Papers of the Boston Society of Natural History 8: 65-79 |
 | Snakes from the uplands of the Canal Zone and of Darien E R Dunn and Joseph R Bailey (1939) Bull. Mus. Comp. Zool. Harvard 86(1): 1-22 |
| Snakes from the uplands of the Canal Zone and of Darien E R Dunn and Joseph Bailey (1939) Bulletin of the Museum of Comparative Zoology 86(1): 1-22 |
 | A brief review of the snakes of Costa Rica E H Taylor (1951) University of Kansas Science Bulletin 34: 3-188 |
 | A new species of the genus Urotheca (Serpentes: Colubridae) from Venezuela J A Roze (1958) Breviora 88: 1-5 |
 | Type specimens of reptiles and amphibians in the United States National Museum (1961) Bulletin of the United States National Museum 220: 1-291 |
 | West Indian xenodontine colubrid snakes: their probable origin, phylogeny, and zoogeography V J Maglio (1970) Bulletin of The Museum of Comparative Zoology 141: 1-53 |
 | Catalogue of the Neotropical Squamata. Part I. Snakes James A Peters and Braulio Orejas-Miranda (1970) Bulletin United States National Museum 297: 1-347 |
 | A note on the generic names Cyclagras Cope and Lejosophis Jan (Reptilia: Serpentes) James A Peters (1970) Proceedings of the Biological Society of Washington 82: 847-850 |
 | Spix and Wagler type specimens of reptiles and amphibians in the Natural History Musea in Munich (Germany) and Leiden (The Netherlands) Marinus S Hoogmoed and Ulrich Gruber (1983) Spixiana. Supplement 9: 319-415 |