Zaocys dhumnades
Habitat
50–2,000 m
Range
Southern and central China, Vietnam and Taiwan
The big-eyed rat snake (Ptyas dhumnades) is a colubrid found in China, Vietnam and Taiwan. In China its range runs from Guangdong north to Hebei and west to Gansu and Yunnan, and it occurs between 50 m and 2,000 m. (The Reptile Database; Wikipedia, general species account)
It has 16 dorsal scale rows, 187–194 ventral scales and 108–116 subcaudals. (Wikipedia, general species account)