Amyxa Troschel, 1852 Prisogaster is a genus of sea snails, marine gastropod mollusks in the subfamily Prisogasterinae of the family Turbinidae, the turban snails.

[1] "The very solid, imperforate shell has an ovate or subglobular shape.

The inner surface of the operculum is yellow, subconcave, with a submarginal, basal nucleus.

"[2] Radula: "The median tooth has a very wide body, and supporting wings.

In the denticulate cusps of the lateral teeth, and the narrow inner marginals this form approaches more closely than any other to Leptothyra. "