THE SNAKES 



209 



Number 



of 

 species 

 Genus Liophis 21 species 



Genus Cyclagras 1 species 



Genus Xenodon 6 species 



Genus Lystrophis 3 species 



Genus Heterodon 3 species 



Genus Aporophis 4 species 



Genus Rhadinaea 26 species 



Genus Urotheca 5 species 



Genus Trimetopon 1 species 



Genus H ydromorphus 1 species 



Genus Dimades 1 species 



Genus Hydrops 2 species 



Genus Sympholis 1 species 



Genus Coronella 6 species 



Genus Ophibolus 7 species 



Genus Diadophis 3 species 



Genus Hypsiglena 6 species 



Genus Rhinochilus 3 species 



Genus Cemophora 1 species 



Genus Simotes 22 species 



Genus Oligodon 18 species 



Genus Prosymna 5 species 



Genus Leptocalamus 3 species 



Genus Arrhyton 3 species 



Genus Simophis 2 species 



Genus Scaphiophis 1 species 



Genus Cyclophis 4 species 



Genus Liopeltis 2 species 



Genus Contia 15 species 



Genus Ficimia 3 species 



Genus Chilomeniscus 2 species 



Genus Homalosoma 4 species 



Genus A blabes 12 species 



Genus Grayia 3 species 



Distribution 



Central and South America; 



West Indies. 

 South America. 

 South America and Central 



America. 

 Southern South America. 

 United States. 

 South America. 

 S. E. U. S.; Central and So. 



America. 

 Cuba, Central and South 



America. 

 Central America. 

 Central America. 

 South America. 

 South America. 

 Mexico. 

 Europe; S. W. Asia; India 



and Africa. 

 U. S.; Mexico and Central 



America. 

 United States and Mexico. 

 United States to South Amer- 

 ica. 

 United States, Mexico and 



Venezuela. 

 Southeastern United States. 

 S. E. Asia; Malay Archipel- 

 ago. 

 So. Asia and Northern Africa. 

 Tropical and South Africa. 

 Tropical America. 

 Cuba. 

 Brazil. 



Tropical Africa. 

 United States; S. W. Asia. 

 United States; S. W. Asia. 

 United States; S. W. Asia. 

 United States ; Mexico. 

 S. W. United States; North- 

 ern Mexico. 

 Africa. 



S. E. Asia and Japan. 

 Tropical Africa. 



