1. Spilotes pullatus anomalepis (Bocourt) (Chicken snake; Caninana; Caninana do papo amarelo; Yacaniña) 2n = 36;Chromosome Atlas: Fish, Amphibians, Reptiles, and Birds;1973
2. Mastigodryas bifossatus bifossatus (Raddi) (Panther snake; Jararacuçu do brejo; Nyakaniná) 2n = 36;Chromosome Atlas: Fish, Amphibians, Reptiles, and Birds;1973
3. Liophis miliaris (Linnaeus) (Cobra d’agua) 2n = 28;Chromosome Atlas: Fish, Amphibians, Reptiles, and Birds;1973
4. Drymarchon corais corais (Boie) (South American indigo snake; Papa-ovo; Papa-pinto) 2n = 36;Chromosome Atlas: Fish, Amphibians, Reptiles, and Birds;1973
5. Clelia occipitolutea (Duméril, Bibron et Duméril) (Black snake Muçurana; Cobra preta) 2n = 50;Chromosome Atlas: Fish, Amphibians, Reptiles, and Birds;1973