Achalinus

Achalinus
Formosa odd-scaled snake, Achalinus f. formosanus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Xenodermatidae
Genus:	Achalinus Peters, 1869

Achalinus (common name: odd-scaled snakes) is a genus of harmless snakes in the family Xenodermatidae. They are found in Japan, Taiwan, China, and northern Vietnam. Nine species are currently recognized.Achalinus was previously placed in Colubridae (along with other xenodermatids). (If anyone knows why exactly they are "odd"-scaled, please add that information to this section.)

*) Not including the nominate subspecies.

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Wikipedia