A large, solid shell with a spire almost as long as its body whorl. The widely flared aperture has six long, hollow spines, open throughout their length, which mostly curve upwards. The siphonal canal is almost a mirror image of the uppermost spine; the stromboid notch is deep. Blunt knobs decorate the body whorl, the knob nearest the lip concave. A parietal callus covers the shell's apertural side. Creamy white, mottled and streaked with brown.