Shell large, up to 100 mm in height, spire short. Aperture very narrow, elongate, with well- developed spiral lirae, outer lip curves round posteriorly to cover half of spire and forms rounded, triangular flange on far side of first projection, with six digitations, three posterior digitations long, three opposite the columella short and recurved towards posterior, stromboid notch deep with scalloped edge, anterior canal long, curved and sealed distally. Sculptured with spiral cords and small knobs on angular shoulder, body whorl with four rows of knobs, upper most with five large knobs and the lower three with smaller knobs. Colour white and pale gray with brown spots, aperture interior and interstices purple brown, aperture and columella with strong white lirations, outer lip inner edge pink.