Cincinnatia cincinnatiensis (Anthony, 1841)[3] Cincinnatia is a genus of very small freshwater snails that have an operculum, aquatic gastropod molluscs in the family Hydrobiidae, the mud snails.

The genus Cincinnatia is currently monospecific, containing the single species Cincinnatia integra (Say, 1821).

[4][5] In 2002, 15 out of the then 16 species of Cincinnatia were transferred to the genera Marstonia and Floridobia:[4]

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