Helicops angulatus (South American Watersnakes)
Helicops angulatus (Linnaeus, 1758)
This species is distinguished from other species of Helicops by the following combination of characters: (1) eyes small and directed upward; (2) pupil round to slightly semielliptical; (3) nostrils directed dorsally; (4) a small, single internasal scale present; (5) dorsal scale rows 19-19-17; (6)…
