Szechwan pit viper, Kham plateau pitviper, Sichuan lancehead
Protobothrops xiangchengensis, commonly known as the Szechwan pit viper, Kham Plateau pitviper, or Sichuan lancehead, is a venomous pit viper species endemic to the Hengduan Mountains in south-central China. No subspecies are currently recognized.
Scalation includes 25 (23, 24) rows of dorsal scales at midbody, 175–194/181–194 ventral scales in males/females, 54–66/44–62 subcaudal scales and 7–8 (9 or 10) supralabial scales.
