Doryssa

Doryssa is a genus of freshwater snails which have an operculum, aquatic gastropod mollusks in the family Pachychilidae.

Distribution
These freshwater snails are endemic to South America.

Species
Species within the genus Doryssa include:
 * Doryssa atra (Bruguière, 1792)
 * Doryssa brevior (Troschel, 1848) - type species of the genus Doryssa
 * Doryssa consolidata (Bruguière, 1790)
 * Doryssa derivans Brot, 1874
 * Doryssa geijskesi (Pain, 1956)
 * Doryssa gruneri (Jonas, 1844)
 * Doryssa hohenackeri (Philippi, 1851)
 * Doryssa kappleri (Vernhout, 1914)
 * Doryssa lamarckiana (Brot, 1870)
 * Doryssa petechialis (Brot, 1860)
 * Doryssa schuppi (Ihering, 1902)
 * Doryssa transversa (Lea, 1850)