Bythinella cylindrica
- kingdom: Animalia
- phylum: Mollusca
- class: Gastropoda
- order: Littorinimorpha
- family: Bythinellidae
- genus: Bythinella
- species: Bythinella cylindrica
- Haidershofen
Lower Austria- Golling an der Salzach
- Schleedorf
Salzburg- Braunau am Inn
- Sankt Lorenz
Upper Austria
Austria- Burghausen
- Simbach am Inn
- Tittmoning
Bavaria
Germany