A Scalariform Canthareus aspersus ( formerly Helix aspersa) collected several years ago as a juvenile from a garden in the south of England, and reared in captivity.
Bill Bailey
Ammonite
Glaucus marginatus Bergh, 1860. © D. Riek (http://www.roboastra.com/)
Beddomea trifasciatus (lowland form). © The Natural History Museum, London.