Its exterior has a grid pattern, made up of a series of bluish-grey transverse zones, unequal in width and intensity.

They are separated by whitish bands and interrupted by longitudinal lines of the same color.

The spire is very short and is composed of four whorls, separated by a linear suture bordered by a small whitish edging.

The aperture, narrow, elongated and slightly constricted in the middle, widens a little in front.

Its external edge, smooth inside and inflected in the middle on the side of the aperture, is covered outside with a large callus, a longitudinal furrow which divides it into two parts.