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Genus Littorina
- type genus of the family Littorinidae: periwinkles
Genus Patella
- type genus of the family Patellidae: common European limpets
Genus Fissurella
- type genus of the family Fissurellidae: keyhole limpets
Genus Ancylus
- type genus of the family Ancylidae: river limpet
Genus Aplysia
- type genus of the family Aplysiidae
Genus Tethus
- type genus of the family Aplysiidae
Genus Hermissenda
- genus of marine sea slugs
Genus Haminoea
- common genus of marine bubble shells of the Pacific coast of North America
Genus Physa
- type genus of the physidae; freshwater air-breathing snails