As a rule they do not seek either to defend themselves or to bite; consequently fatal accidents caused by them are scarcely known in the case of human beings. Their venom, however, is very toxic to animals.
(e) Doliophis.
This genus exhibits the same characters as Callophis, except that the poison-glands, instead of being confined to the temporal region, extend a very long way on each side of the body, to about one-third of its length, gradually growing thicker and terminating at the base of the heart.
It includes four species:—
(1) D. bivirgatus.—Colour reddish-purple or black on the back, red on the head, tail, and belly.
Total length, 1,610 millimetres; tail 190.
Habitat: Burma, Indo-China, Malay Peninsula, Sumatra, Java, and Borneo.
(2) D. intestinalis.—Brown or black on the back, with darker or lighter longitudinal streaks; tail red beneath; belly red, crossed with black streaks.
Total length, 580 millimetres; tail 45.
Habitat: Burma, Malay Peninsula, Sumatra, Java, Borneo, Celebes.