v. 1. Typhlopidae, Glauconiidae, Boidae, Ilysiidae, Uropeltidae, Xenopeltidae, and Colubridae Aglyphae, part -- v. 2. Containing the conclusion of the Colubridæ Aglyphæ -- v. 3. Colubridae (Opisthoglyphae and Proteroglyphae), Amblycephalidae and Viperidae.