Coryphophylax is an agamid genus endemic to the Andaman and Nicobar Islands and a sister of the Southeast Asian Aphaniotis.

Found in tropical wet forests, they are common in suitable habitats and shows variations across islands and are sexually dimorphic.

The tsunami of December 2004 may have affected island-wide distributions in the Nicobar Islands of several species and also their gene-flow.

The species from the Andaman Islands was described by Edward Blyth as Tiaris subcristata in 1860 but technically published in 1861.

The closely related genus Aphaniotis (and the more distant Otocryptis) has a concealed tympanum while Gonocephalus has spines on the head or nape.