Shell of medium size, up to 50 mm in height, spire stunted, suture deeply and narrowly grooved, body whorl rather inflated posteriorly. Columella with broad callus on the anterior end gradually thinning towards the posterior half, with ridges throughout, posterior end of the columella extended to level with the beak-like extension of the outer lip which extends to level with the spire. Colour highly variable, brown with wavy dark brown lines and zigzag pattern, often with a dark spiral band in the middle, aperture usually white.