Species
The genus Cincinnatia is currently monospecific, containing the single species Cincinnatia integra (Say, 1821).
- Species brought into synonymy
In 2002, 15 out of the then 16 species of Cincinnatia were transferred to the genera Marstonia and Floridobia:
- Cincinnatia alexander Thompson, 2000: synonym of Floridobia alexander (Thompson, 2000)
- Cincinnatia comalensis (Pilsbry & Ferriss, 1906): synonym of Marstonia comalensis (Pilsbry & Ferriss, 1906)
- Cincinnatia floridana (Frauenfeld, 1863): synonym of Floridobia floridana (Frauenfeld, 1863)
- Cincinnatia fraterna Thompson, 1968: synonym of Floridobia fraterna (Thompson, 1968)
- Cincinnatia helicogyra Thompson, 1968: synonym of Floridobia helicogyra (Thompson, 1968)
- Cincinnatia leptospira Thompson, 2000: synonym of Floridobia leptospira (Thompson, 2000)
- Cincinnatia mica Thompson, 1968: synonym of Floridobia mica (Thompson, 1968)
- Cincinnatia monroensis (Dall, 1885): synonym of Floridobia monroensis (Dall, 1885)
- Cincinnatia parva Thompson, 1968: synonym of Floridobia parva (Thompson, 1968)
- Cincinnatia petrifons Thompson, 1968: synonym of Floridobia petrifons (Thompson, 1968)
- Cincinnatia ponderosa Thompson, 1968: synonym of Floridobia ponderosa (Thompson, 1968)
- Cincinnatia porteri Thompson, 2000: synonym of Floridobia porteri (Thompson, 2000)
- Cincinnatia vanhyningi (Vanatta, 1934): synonym of Floridobia vanhyningi (Vanatta, 1934)
- Cincinnatia wekiwae Thompson, 1968: synonym of Floridobia wekiwae (Thompson, 1968)
- Cincinnatia winkleyi (Pilsbry, 1912): synonym of Floridobia winkleyi (Pilsbry, 1912)
