Gibbula tumida

The small, narrowly umbilicate shell has an elevated conical shape.

The six whorls are convex, encircled by numerous, close fine striae.

The base of the shell is slightly convex, and concentrically finely lirate.

The deep umbilicus is narrow, expanding and funnel-shaped at its opening.

This species is readily recognized by the form, the whorls being a little tumid just below the sutures, and the base of the aperture is usually a little emarginate.