The shell has a thinner sculture than that of alleryi, and its spire is slightly more domed. On the base, the radial rectangular tiles that spread around the umbilicus are less marked. Colour pale yellowish, without any pattern on the keel. – Above: 650m deep, Sardinia Channel. 4mm. Original pictures provided by A. Nappo (IT) for WoRMS – (CC BY-NC-SA).