Snout much depressed; eye rather small. Rostral much broader than long, just visible from above; internasals much shorter than the prefrontals; frontal as long as or a little shorter than its distance from the end of the snout, a little shorter than the parietals; loreal elongate, not entering the eye; one pre-ocular; two post-oculars; temporals small, 1 + 2; 9 or 10 upper labials, third, fourth, and fifth entering the eye; 4 or 5 lower labials in contact with the anterior chin-shields, which are longer than the posterior.
Dorsal scales smooth, in 17 rows. Ventrals 167–175, not angulate laterally; anal divided; subcaudals 56–63, in two rows.
Coloration in alcohol (for preserved specimens): brown above, each scale with two white dots or short longitudinal lines; labials white; usually a white collar; lower surface uniform white.[4]
Total length 35 cm (133⁄4 inches); tail 6 cm (23⁄8 inches).[5]
