Siphonaria

Siphonaria is a genus of air-breathing sea snails or false limpets, marine pulmonate gastropod molluscs in the family Siphonariidae, the false limpets.

[1] This genus occurs worldwide in most tropical and temperate seas.

According to the World Register of Marine Species (WoRMS), the following species are included in the genus Siphonaria [2]

A shell of Siphonaria sirius
Three rows of the radula of Siphonaria; c) central tooth l) lateral teeth
Siphonaria gigas Sowerby, 1825 . Museum specimens