Morphological variation in the striped water snake Helicops trivittatus (Gray, 1849) (Reptilia: Serpentes: Xenodontidae) of eastern Amazonia Variação morfométrica da cobra-d'água Helicops trivittatus (Gray, 1849) (Reptilia: Serpentes: Xenodontidae) do ...
Species New to Science: [Herpetology • 2019] Helicops boitata • Chance, Luck and A Fortunate Finding: A New Species of Watersnake of the Genus Helicops Wagler, 1828 (Serpentes: Xenodontinae), from the Brazilian Pantanal Wetlands