Tylodina

Tylodina is a genus of medium-sized sea snails or false limpets  in the family Tylodinidae.

Species
Species within the genus Tylodina include:
 * Tylodina americana
 * Tylodina corticalis
 * Tylodina fungina- Observed solitary, in pairs and aggregating in small groups in reefs around San Clemente Island, the southernmost Channel Islands off the coast of Southern California July 2015.
 * Tylodina perversa