The size of this large, heavy, top-shaped shell varies between 18 mm and 40 mm. The shell has wrinkled
plaits and
concatenated dots. The
sutures of the upper
whorls are spinous and radiated. The
shell has a yellow tint to it and has brown stripes. The inside of the shell is a glossy white. (Description as
Trochus incrassatus) The height of the shell attains 30 mm, its diameter also 30 mm. The, thick, heavy, solid shell has a conical shape. It is, whitish, radiately striped above and below with purplish red. The outlines of the
spire are convex. The 7 to 8 whorls are coarsely granulose in about 5 or 6 spiral series, of which the upper series is most prominent. The periphery is rounded. The base of the shell is a little concave, with about 7 concentric granulose or subgranulose lirae. The
aperture is strongly lirate within upon the parietal and outer wall. The basal margin contains four or five teeth. The
columella is dentate. The umbilical tract is nearly smooth or obsoletely spirally plicate. ==Distribution==