It is a graceful snake with smooth, round, elongate, gradually tapering body with the tail more than one-fourth the total length. It has a moderately narrow head. It ranges from grey, olive-brown, olive-green or dirty yellow. It has a series of black rhomboidal cross-bars on the back. The scales forming the cross-bars normally have colour on the edges only. The sides have similar smaller spots alternating with interspaces which may be broader or narrower than them. The belly is yellow to white with glossy scales.