green keelback

Description:

Total length males 600 mm, females 810; tail length males 120 mm, females 130 mm.Head scalation consists of 10-11(12) upper labials, the first partially or completely fused to the nasal. Head scales small, subequal, feebly imbricate, smooth or weakly keeled. The supraoculars are narrow, occasionally enlarged and undivided with 8-12 interocular scales between them. Temporal scales smooth. Midbody has 21 (rarely 19) longitudinal scale rows. The ventral scales are 155-166 in males, 152-176 in females. The subcaudals are paired, 60-72 in males, 49-66 in females. The hemipenes are without spines.Color pattern: green above, the side of the head below the eyes is yellow, white or pale green, much lighter than rest of head. The belly is green, yellowish or white below. A light ventrolateral stripe is present in all males, but absent in females. The end of tail is not mottled brown.

Habitat:

Found in northern India (Assam), Nicobar Islands, Myanmar, Thailand, Cambodia, Laos, Vietnam, southern China (Fukien, Hainan, Kwangsi, Kwangtung), Hong Kong, West Malaysia, Indonesia

Notes:

it is a very fast snake.