Hebius parallelus

The Yunnan keelback is a natricine snake endemic to Asia, found in Bhutan, China (Tibet and Yunnan), north-east India (Arunachal Pradesh, Assam, Sikkim, Nagaland) and Myanmar. Adults may attain 56 cm in total length, with a tail of 14 cm (Wikipedia, general species account).

It is brown above with two parallel yellowish, black-edged stripes on the body and tail. The belly and under-tail scales are uniform yellow, or have a black dot on each side. There is a black streak from the eye to the corner of the mouth, and the lip scales are yellow.