Zamenis

Zamenis is a genus of Old World non-venomous snakes in the family Colubridae.

Etymology
The generic name Zamenis comes from Greek ζαμενής (lat. vehemens, iracundus) meaning "angry", "irritable", "fierce".

Species
The following six species are recognized as being valid:
 * Zamenis hohenackeri (Strauch, 1873) – Transcaucasian ratsnake
 * Zamenis lineatus (Camerano, 1891) – Italian Aesculapian snake
 * Zamenis longissimus (Laurenti, 1768) – Aesculapian snake
 * Zamenis persicus (F. Werner, 1913) – Persian ratsnake
 * Zamenis scalaris (Schinz, 1822) – ladder snake
 * Zamenis situla (Linnaeus, 1758) – European ratsnake

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Zamenis.