Language: Spanish with English summary (1 p.) and bilingual key in English and Spanish
A list of snakes from continental Ecuador and Galapagos Archipelago is made with a description and geographic distribution of each species. Artificial keys for determination of families, genera, species and subspecies are presented both in Spanish and english. The snakes in Ecuador are represented by members belonging to 9 families which include 62 genera and a total of 186 species; Aniliidae (1 genus and 1 species); Anomalepididae (2 genera and 1 species); Boidae (6 genera and 10 species); Colubridae (46 genera and 131 species); Crotalidae (2I genera and 16 species); Elapidae (2 genera and 19 species); Hydropheidae (1 genus and 1 species); Leptotyphlopidae (1 genus and 5 species); Typhlopidae (1 genus and 1 species).