''Epioblasma penita'', the southern combshell or penitent mussel, is a species of freshwater mussel, an aquatic

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

mollusk in the family Unionidae, the river mussels. This species is endemic to the United States. Its natural habitat is rivers. It is threatened by habitat loss.

References

Molluscs of the United States penita Bivalves described in 1834 Taxa named by Timothy Abbott Conrad ESA endangered species Taxonomy articles created by Polbot {{Unionidae-stub