Volume 1. The Herpetologists’ League, Washington, DC (for Loxocemidae, Pythonidae, Boidae, Bolyeriidae, Tropidophiidae Viperidae — except for the retention of the genera Acrantophis, Sanzinia, Calabaria Lichanura and the recognition of Epicrates maurus as a valid species)
Volume 1. The Herpetologists’ League, Washington, DC. [voor Loxocemidae, Pythonidae, Boidae, Bolyeriidae, Tropidophiidae Viperidae — met uitzondering van het behoud van de genera Acrantophis, Sanzinia, Calabaria Lichanura and the recognition of Epicrates maurus als geldige soorten]