Callogaza

Callogaza is a genus of sea snails, marine gastropod mollusks in the family Margaritidae.

==Description== The shells of the species in this genus are thin-walled and almost transparent. Because of this, they are iridescent. The outer lip is deflected. A flat callus of the inner lip covers completely or only in part the wide umbilicus (but only in fully grown species). These features form a synapomorphy with the genus Gaza.