[3] Head black dorsally and ventrally, with a yellowish bar on the prefrontals, and with a yellowish streak behind the eye on the postocular and upper portion of last upper labial.

Anterior part of body black dorsally and ventrally, with yellow crossbars on the dorsum.

Posterior part of body olive dorsally and yellow ventrally, with black rings, which are broader on the dorsum.

Dorsal scales on neck smooth, arranged in 25 rows.

Dorsal scales on body with a short keel or small tubercle, in 35 rows.