The species of Bungarus, four in number, are extremely common in India, Burma, and Ceylon, and are distinguished by having only one row of undivided sub-caudal shields.
Of these, several poisonous species exist, including the cobra and karait (Naja tripudians and Bungarus caeruleus).
In South Africa the harmless egg-eating snake (Dasypeltis scaber) is very like the Cape adder (Bitis atropos); and in Ceylon the harmless Colubrine Lycodon aulicus is alleged to mimic Bungarus ceylonicus, an ally of the deadly krait of India.