Etheriidae

Etheriidae is a small family of medium-sized freshwater mussels, aquatic bivalve molluscs in the order Unionida. It contains two monotypic genera.

Genera
Genera within the family Etheriidae include:
 * Acostaea d'Orbigny, 1851
 * Acostaea rivolii Deshayes, 1827
 * Etheria Lamarck, 1807
 * Etheria elliptica Lamarck, 1807
 * Pseudomulleria
 * Pseudomulleria dalyi Smith, 1898