Dendrelaphis humayuni

The Nicobar bronzeback, also called Tiwari's bronzeback, is a colubrid snake endemic to the Nicobar Islands of India. It is widely distributed in the central and southern Nicobar Islands but absent from Car Nicobar; the island of Chowra appears to be its northern limit and Great Nicobar Island its southern limit. It averages about 1 m in length and has 172–190 belly scales (Wikipedia, general species account).

It is active by day and lives in trees, preys on frogs and lays eggs. It has 9 upper lip scales, with the 5th and 6th touching the eye in most cases, and is mostly confused with the Andaman form of the common bronzeback. There is a single record from Camorta Island, collected by Wall.