Identifying British freshwater snails: Shell cap shaped

Freshwater snails » Shell shape » Shell cap shaped

Shell shaped like a cap or shield without any sign of helical coiling. Two families of freshwater limpet occur in our area, but are here considered together due to the similarity of shell shape. As we advance further in this key, they will be separated.

Please click on the image most like your specimen.

Acroluxus lacustris
Acroloxus lacustris
Apex points backwards and towards the left. Shell is shield shaped.



Family: Ancylidae (now included in Planorbidae)
Apex points backwards and to the right. Shell more cap shaped.