Simnia is a genus of sea snails, marine gastropod mollusks in the family Ovulidae.
Dolin & Ledon (2002) considered that the lectotype of Simnia nicaeensis Risso, 1826, type species of Simnia, is a juvenile specimen of Simnia spelta (Linnaeus, 1758) type species of Neosimnia Fischer, 1884. This makes Simnia an objective synonym of Neosimnia. Accordingly, all the species treated in Lorenz & Fehse (2009) under Neosimnia should thereby be accepted under Simnia. Likewise, all the species treated by Lorenz & Fehse (2009) under Simnia should thereby be accepted under Xandarovula Cate, 1973.
Species within the genus Simnia include:
Simnia aequalis (Sowerby I, 1832)Simnia aperta (G.B. Sowerby II, 1849)Simnia arcuata (Reeve, 1865)Simnia avena (G.B. Sowerby I, 1832)Simnia barbarensis Dall, 1892Simnia bartschi (Cate, 1973)Simnia bijuri (Cate, 1976)Simnia hammesi (Bertsch & Bibbey, 1982)Simnia hiscocki Lorenz & Melaun, 2011Simnia hyalina Lorenz & Fehse, 2009Simnia jacintoi Fehse & Trigo, 2015Simnia loebbeckeana (Weinkauff, 1881)Simnia macleani (Cate, 1976)Simnia patula (Pennant, 1777)Simnia sculptura (Cate, 1973)Simnia senegalensis (F.A. Schilder, 1931)Simnia spelta (Linnaeus, 1758)Simnia vidleri (G.B. Sowerby III, 1881)Species brought into synonymySimnia acicularis (Lamarck, 1811): synonym of Cymbovula acicularis (Lamarck, 1811)Simnia aureocincta Dall, 1899: synonym of Cyphoma aureocinctum (Dall, 1889)Simnia inflexa Schilder, 1941: synonym of Simnialena rufa (G.B. Sowerby I, 1832)Simnia inflexa (Sowerby I, 1832): synonym of Simnialena rufa (G. B. Sowerby I, 1832)Simnia nicaeensis Risso, 1826: synonym of Simnia spelta (Linnaeus, 1758)Simnia nicaoensis Risso, 1826: synonym of Simnia nicaeensis Risso, 1826Simnia patriciae (Nolf, 2008): synonym of Phenacovolva patriciaeSimnia piragua Dall, 1889: synonym of Calcarovula piragua (Dall, 1889)Simnia rufa (G.B. Sowerby II, 1832): synonym of Simnialena rufa (G.B. Sowerby II, 1832)Simnia sowerbyana Paetel, 1887: synonym of Phenacovolva brevirostris (Schumacher, 1817)Simnia uniplicata (G. B. Sowerby II, 1849): synonym of Simnialena uniplicata (G. B. Sowerby II, 1849)Simnia xanthochila Kuroda, 1928: synonym of Contrasimnia xanthochila (Kuroda, 1928)Species inquerendaSimnia illyrica (Schilder, 1925)
