''Cincinnatia'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of very small

freshwater snail Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...

s that have an operculum, aquatic

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

s in the family Hydrobiidae, the mud snails.

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 Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American biologist, malacologist and carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a centu ...

& Ferriss, 1906): synonym of ''

Marstonia comalensis ''Marstonia comalensis'' is a species of minute freshwater snail with a gill and an operculum, an aquatic gastropod mollusk or micromollusk in the family Hydrobiidae. It is found in south central Texas, United States. ''Marstonia comalensis'' ...

'' (

& Ferriss, 1906) * ''Cincinnatia floridana'' ( Frauenfeld, 1863): synonym of ''

Floridobia floridana ''Floridobia'' is a genus of very small freshwater snails that have an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae, the mud snails. Species Species within the genus ''Floridobia'' include: *'' Floridobia ...

'' ( 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 ''Floridobia'' is a genus of very small freshwater snails that have an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae, the mud snails. Species Species within the genus ''Floridobia'' include: *'' Floridobia ...

'' (Thompson, 2000) * ''Cincinnatia mica'' Thompson, 1968: synonym of ''

Floridobia mica The Ichetucknee siltsnail, also known as the sand grain snail, scientific name ''Floridobia mica'', is a species of small freshwater snail, an aquatic gastropod in the family Hydrobiidae. This species is endemic Endemism is the state of a ...

'' (Thompson, 1968) * ''Cincinnatia monroensis'' ( Dall, 1885): synonym of ''

Floridobia monroensis The Enterprise siltsnail, also known as the Enterprise spring snail, scientific name ''Floridobia monroensis'', is a species of very small freshwater snails that have an operculum, aquatic gastropod mollusks in the family Hydrobiidae, the mud ...

'' (Dall, 1885) * ''Cincinnatia parva'' Thompson, 1968: synonym of ''

Floridobia parva The pygmy siltsnail, scientific name ''Floridobia parva'', is a species of very small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States T ...

'' (Thompson, 1968) * ''Cincinnatia petrifons'' Thompson, 1968: synonym of ''

Floridobia petrifons ''Floridobia'' is a genus of very small freshwater snails that have an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae, the mud snails. Species Species within the genus ''Floridobia'' include: *'' Floridobia ...

'' (Thompson, 1968) * ''Cincinnatia ponderosa'' Thompson, 1968: synonym of ''

Floridobia ponderosa The ponderous siltsnail or ponderous spring snail, scientific name ''Floridobia ponderosa'', is a species of small freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic Endemism is the state of a ...

'' (Thompson, 1968) * ''Cincinnatia porteri'' Thompson, 2000: synonym of ''

Floridobia porteri ''Floridobia'' is a genus of very small freshwater snails that have an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae, the mud snails. Species Species within the genus ''Floridobia'' include: *'' Floridobia ...

'' (Thompson, 2000) * ''Cincinnatia vanhyningi'' (Vanatta, 1934): synonym of ''

Floridobia vanhyningi The Seminole siltsnail or Seminole spring snail, scientific name ''Floridobia vanhyningi'', is a species of small freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to Seminole Springs in Florida, U ...

'' (Vanatta, 1934) * ''Cincinnatia wekiwae'' Thompson, 1968: synonym of ''

Floridobia wekiwae The Wekiwa siltsnail or Wekiwa spring snail, scientific name ''Floridobia wekiwae'', is a species of small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the Wekiwa Spring ...

'' (Thompson, 1968) * ''Cincinnatia winkleyi'' (

, 1912): synonym of '' Floridobia winkleyi'' (

, 1912)

References

Hydrobiidae Taxonomy articles created by Polbot {{Hydrobiidae-stub