(9) L. purpureomaculatus.—12-15 scales in a line between the supraocular shields; scales in 25-27 rows; ventrals 160-182; subcaudals 55-76; supraocular shield very narrow, sometimes broken up.
Coloration purplish-black above, sometimes variegated with pale green; flanks pale green; belly olive or greenish-white, uniform or spotted with black. Some specimens are entirely green.
Total length, 980 millimetres; tail 150.
Habitat: Himalayas, Bengal, Assam, Burma, Malay Peninsula, Andaman and Nicobar Islands, Pulo-Pinang, Sumatra.
IV. Scales in 21 rows (rarely 19 or 23); 7-13 series of scales between the supraoculars; tail more or less prehensile.
(10) L. gramineus (Syn. Trimeresurus gramineus. The Green Pit Viper).—145-175 ventral scales; 53-75 subcaudals; snout slightly projecting; supraocular shield narrow.
Colour bright green, rarely olive or yellowish, with or without darker transverse bands; end of tail yellow or red; belly green, yellow, or white.
Total length, 870 millimetres; tail 150.
Habitat: South-eastern Asia, Darjeeling, Himalayas, Ganges Delta, Siam, Southern China, Hong Kong, Formosa, Java, Sumatra, Timor.
