Distribution:- North Vietnam,
Taiwan,
China,
Japan
Comments:- Grows to around 2m (6 ft) total length
There are two subspecies:- E. c. carinata is found throughout China and northern Vietnam. E. c. yonaguniensis, is found in Taiwan and the Ryukyu Islands of Japan.
(E. c. deqenensis, found in Northwest Yunnan province China is now considered to be E. c. carinata)