Vanitrochus semiustus

The very small shell is profoundly umbilicated, and has a conoidal shape.

They are spirally lirate, and elegantly clathrate with lamellose radiating striae.

The convex body whorl is elongated, with a zone of white and chestnut spots at the periphery, convex beneath, whitish or maculate with chestnut, clathrate, with about 4 concentric lirae.

The umbilical area is funnel-shaped, spirally plicate, and carinated at its edge.

[2] This marine shell occurs off New Caledonia and Australia (Queensland).