Nostril pierced in a single nasal, or between a nasal and a postnasal; no supranasal; rostral convex, largely m contact with the frontonasal, which is broader than long, and forms a narrow suture with the frontal; the latter as long as frontoparietal and parietals together, in contact with the first, second, and third supraoculars; 4 large supraoculars, followed by 2 very small ones; first supraocular not much longer than second; 9 or 10 supracilianes, first largest; frontoparietals and interparietal distinct, former a little longer than latter; parietals forming a short suture behind the interparietal; no nuchals; fifth and sixth upper labials largest and below the eye.

36 or 38 smooth scales round the middle of the body, laterals smallest.

Digits rather elongate, compressed; subdigital lamellae smooth or obtusely keeled, 17 to 20 under the fourth toe.

Brown or olive above, uniform or with scattered darker dots; sides of head and body dark brown, light-margined above; usually with large light spots; lower surface whitish.

Hainan, west to E Xizang = Tibet, and north to Henan, Shaanxi, and Gansu, Guangdong: Nan Ao Island), Bangladesh, Bhutan, Taiwan, Thailand (likely in Bilauk Tuang mountain fide Taylor 1963: 1020), Vietnam, India (Darjeeling, Sikkim) east to Indochina and south to W Malaysia Type locality: Sikkim, Himalayas.