Sri Lanka humpnose viper

Description

Adults grow to a total length of 30–35 cm (11 3⁄4–13 3⁄4 in).According to Wall (1921),the maximum recorded lengths are for a male of 38.7 cm (15 1⁄4 in) and a female of 38.1 cm (15.0 in).According to Deraniyagala (1955),the largest specimen in the Colombo museum was 39.2 cm (15 1⁄2 in) in total length with a tail measuring 5.9 cm (2 1⁄4 in).In general,the tail is 13-18% of total body length.The body is moderately slender with a head that is conspicuously distinct from the neck