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Sibynophis collaris
Range
India (Sikkim, Meghalaya, Arunachal Pradesh, Himachal Pradesh and elsewhere), Nepal, Bhutan, Bangladesh, Myanmar, South-east Asia and China
Size
Total length about 74cm
The common many-toothed snake, also called Betty's many-toothed snake or the collared black-headed snake, is a colubrid snake of South and East Asia. The back scales are smooth, without apical pits, in 17 rows. Total length is about 29 inches (737 mm) with a tail of about 9.5 inches (Wikipedia, general species account).
It is found in India, Nepal, Bhutan, Bangladesh, Myanmar, Thailand, Laos, Vietnam, western Malaysia and China. The type locality is the Khasi Hills, India. The Reptile Database lists Sikkim, Meghalaya, Arunachal Pradesh, Himachal Pradesh, Shimla, Mizoram, Nagaland and Jammu and Kashmir.