Types of Ampullariidae (Mollusca: Gastropoda) in the National Museum of Natural History, Smithsonian Institution, with Lectotype Designations

The caenogastropod family Ampullariidae Gray, 1824, is a family of freshwater snails predominantly distributed in humid tropical and subtropical habitats in Africa, South and Central America, and Asia. The family includes the largest of all freshwater snails and frequently constitutes a major portion of the native freshwater malacofauna of these regions. Ampullariid taxonomy is confused primarily because most species were described on the basis...