|Diagnosis||DESCRIPTION. Head very small, body very slender anteriorly, compressed posteriory and two to three times diameter of neck; 4–5 maxillary teeth behind venom fangs; scales at midbody subimbricate, hexagonal in shape, often with a median tubercle or keel; 6, occasionally only 5, upper labials, 3rd and 4th border eye; scales in 23–31 rows around neck, 37–45 around midbody; ventrals 328–414, distinct throughout; color (live) bluish white (greyish in preserved specimens), with 60–80 dark grey (black) bands, anteriorly they encircle body and are about twice as broad as the interspaces, posteriorly they narrow on the sides and may be incomplete below; head black or dark grey with curved yellow horseshoe-shaped marking across snout and extending back along sides of head. (Modified from Smith 1926:100–101 and Rasmussen et al. 2011:5, Leviton et al. 2014: 504).|
Diagnostic characters: Head small, body long and slender anteriorly. Scale rows around neck 25–31; scale rows around body 3–45; ventrals 328–414. Maxillary teeth behind fangs 4–5. Colouration: Body bluish white with 60 to 80 dark or black bands. Anteriorly these completely encircle the body, but posteriorly they narrow on the sides and may be incomplete below. Head blackish, with a yellow horseshoe mark on the upper side.
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