Marionia
Marionia is a genus of sea slugs, specifically dendronotid nudibranchs, marine gastropod molluscs in the family Tritoniidae.
Species
Species within the genus Marionia include:;Species brought into synonymy:Marionia affinis Bergh, 1883: synonym of Marionia blainvillea Marionia berghii Vayssière, 1879: synonym of Marionia blainvillea Marionia occidentalis Bergh, 1884: synonym of Marionia cucullata Marionia tethydea : synonym of ''Marionia blainvillea''