Antrorbis
Antrorbis is a genus of minute freshwater snails with gills and opercula, aquatic gastropod molluscs in the family Lithoglyphidae. The generic name is derived from Classical Greek language word "antrum", that means a cave and from Greek language word "orbis", that means circle. Species
Antrorbis breweri Hershler & F. G. Thompson, 1990
Antrorbis tennesseensis Perez, Shoobs, Gladstone, & Niemiller, 2019

References

Lithoglyphidae
Cave snails