Dipsadidae — Rear-fanged Snakes
Species I've seen:
Atractus — Earth Snakes
Atractus major
Big Ground Snake
Carphophis — North American Wormsnakes
Carphophis amoenus
Common Wormsnake
Carphophis vermis
Western Wormsnake
Contia — Sharp-tailed Snakes
Contia longicaudae
Forest Sharp-tailed Snake
Contia tenuis
Common Sharp-tailed Snake
Diadophis — Ring-necked Snakes
Diadophis punctatus
Ring-necked Snake
Dipsas — Snail-eating Snakes
Dipsas catesbyi
Ornate Snail-eating Snake
Dipsas indica
Big-headed Snail-eating Snake
Drepanoides — Amazon Egg-eating Snakes
Drepanoides anomalus
Amazon Egg-eating Snake
Farancia — Mudsnakes and Rainbow Snakes
Farancia abacura
Red-bellied Mudsnake
Helicops — Neotropical Water Snakes
Helicops angulatus
Banded South American Water Snake
Heterodon — North American Hog-nosed Snakes
Heterodon kennerlyi
Mexican Hog-nosed Snake
Hypsiglena — North American Nightsnakes
Imantodes — Central American Tree Snakes
Imantodes cenchoa
Common Blunt-headed Tree Snake
Imantodes gemmistratus
Central American Tree Snake
Imantodes lentiferus
Amazon Blunt-headed Tree Snake
Leptodeira — Cat-eyed Snakes
Oxyrhopus — Calico Snakes
Oxyrhopus formosus
Yellow-headed Calico Snake
Oxyrhopus petolarius
Banded Calico Snake
Oxyrhopus vanidicus
Mimic False Coral Snake
Philodryas — Green Racers
Philodryas argentea
Green-striped Vine Snake
Pseudoboa — Scarlet Snakes
Pseudoboa coronata
Crowned False Boa
Sibon — Snail-eating Snakes
Sibon nebulatus
Cloudy Snail-eating Snake
Siphlophis — Liana Snakes
Taeniophallus — Leaf-litter Snakes
Taeniophallus brevirostris
Short-nosed Leaf-litter Snake
Xenopholis — Flat-headed Snakes
Xenopholis scalaris
Wucherer’s Ground Snake