Bythinella cylindrica is a species of very small freshwater snail, an aquatic gastropod mollusk in the family Bythinellidae.
This species is endemic to Austria.
References
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017
External links Frauenfeld, G. von. (1857). Über die Paludinen aus der Gruppe der Pal. viridis Poir. Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Classe. 22(2): 569-578, 1 pl.