Habitat: Central Asia, Eastern Siberia, Mongolia, and Japan.
A. blomhoffii.—Similar to A. halys, but the snout is not turned up at the end, and the body scales are in 21 rows; 137-166 ventral scales; 29-55 subcaudals.
Coloration very variable; grey, brown, or red above, with large black-edged spots arranged in pairs; black, light-edged band on the temple; upper lip uniformly yellow or red; belly yellow or reddish, more or less spotted with black, or almost entirely black.
Total length, 720 millimetres; tail 100.
Habitat: Eastern Siberia, Mongolia, China, Japan, Siam.
A. himalayanus.—Snout scarcely turned up, with a hard tip; 5-7 supralabial shields. Body scales in 21 (rarely 23) rows; 144-166 ventrals; subcaudals in 35-51 pairs.
Fig. 31.—Ancistrodon hypnale.