natricinae

It belongs to the subfamily Natricinae, and is closely related to water snakes and grass snakes.

The Natricinae are a subfamily of the Colubridae family of snakes, which comprises 28 genera.

Common keelback may refer to several species of colubrid snakes of the subfamily Natricinae:

Keelbacks are Colubrid snakes of the subfamily Natricinae, so named because their dorsal scales exhibit strong keeling.

Eastern Water Snake or Olive Keelback (Sinonatrix percarinata) is a species of snake from subfamily Natricinae.

The dice snake (Natrix tessellata) is a European nonvenomous snake belonging to the family Colubridae, subfamily Natricinae.

A new species of the natricine snake genus Amphiesma from the Indochinese Region (Squamata: Colubridae: Natricinae).

Kirtland's snake (Clonophis kirtlandii) is an endangered North American species of nonvenomous snake of the subfamily Natricinae, of the family Colubridae.

Über die Verbreitung und Biologie der Himalaya-Gebirgswassernatter Amphiesma platyceps (Blyth 1854) und einen Fall von Amphigonia retardata (Serpentes: Colubridae: Natricinae).