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Keywords snakes, Dipsadinae, Neotropical, feeding adaptions, diet Abstract Snakes of the Neotropical subfamily Dipsadinae are poorly known from both ecological and phylogenetic perspectives, despite unique feeding adaptations and bizarre diets. Some of these snakes specialize on snails and slugs (ecologists refer to them as “goo eaters”), and they have a unique dentition and jaw structure that permits them to extract gastropod snails from their shells.

Keywords phylogenetic relationships, North America, heterodontine snakes Abstract Among extant snakes (~3150 species), Caenophidia or “advanced” snakes are a monophyletic group comprising the great majority of species (~2620) of species (Vidal et al. 2010). The American caenophidian snake fauna comprises five families: the Viperidae and Elapidae – both displaying a front fanged venom system- and the colubroidean families Natricidae, Colubridae and Dipsadidae.

Keywords species boundaries, Gymnodactylus darwinii, lizards, gekkos Department Plant and Wildlife Sciences Abstract The genus Gymnodactylus is a group of small lizards belonging to the family Gekkonidae, which occur in the east and central areas of Brazil. The species G. darwinii is restricted to the Atlantic Forest and ranges from the northeastern state of Bahia south 1500 miles along the coast to the northern region of the southeastern state of São Paulo. Recommended Citation Waite, Aaron N.