Specimen in natural condition. At low tide in crevice, Jeffrey's Bay, Western Cape, 57mm.
The shape is typical: "Shell [...] arched, convex [...] inflated around spire" (Poppe & Geiger, 2000).
Many holes open, flat. Ventral margin wavy.

The inner spire often shows a red blotch. Otherwise, this species is not very variable.
Table Bay, Western Cape. 52mm.

Table Bay, 67mm. Notice the furrow between the suture and the row of holes,
a feature that is constant in the species, even if it is not always so pronounced.