Caenogastropoda (Subclass) > Littorinimorpha (Order) > Littorinoidea (Superfamily) > Littorinidae (Family) - Periwinkles and Chink shells
Lacuna
Lacuna crassior (Montagu, 1803)
- Thick chink shell or Lacuna
Lacuna pallidula (da Costa, 1778)
- Pallid chink shell or Pale lacuna
Lacuna parva (da Costa, 1778)
- Least or Globular chink shell or Tiny lacuna
Lacuna vincta (Montagu, 1803) - Banded chink shell
Littorina
Littorina fabalis (Turton, 1825) syn. Littorina mariae
- Flat periwinkle
Littorina littorea (Linnaeus, 1758)
- Common periwinkle / Edible winkle
Littorina nigrolineata (J E Gray, 1839)
- Black-lined periwinkle
Littorina obtusata (Linnaeus, 1758)
- Flat periwinkle or Yellow periwinkle
Littorina saxatilis aggregata (Olivi, 1792)
- Rough periwinkle
Melarhaphe
Melarhaphe neritoides (Linnaeus, 1758) - Small periwinkle
Caenogastropoda (Subclass) > Littorinimorpha (Order) > Littorinoidea (Superfamily) > Skeneopsidae (Family)
Skeneopsis
Skeneopsis planorbis (Fabricius O., 1780) - Flat Skenea