Cithna is a genus of sea snails, marine gastropod mollusks in the family Liotiidae.

Species Species within the genus Cithna include: Cithna globosa A. Adams, 1863 Cithna margaritifera (R. B. Watson, 1880) † Cithna pilsbryi Richards 1947 H. G. Richards. 1947. Invertebrate fossils from deep wells along the Atlantic Coastal Plain. Journal of Paleontology 21(1):23-37 Cithna spirata A. Adams, 1863

Synonyms Cithna carinata Jeffreys, 1883 is a synonym of Haloceras carinata (Jeffreys, 1883) Cithna cingulata Verrill, 1884 is a synonym of Haloceras cingulata (Verrill, 1884) Cithna jeffreysi (Dautzenberg, 1889) is a synonym of Benthonella tenella (Jeffreys, 1869) Cithna marshalli Sykes, 1925 is a synonym of Iphitus marshalli (Sykes, 1925) Cithna naticiformis Jeffreys, 1883 is a synonym of Choristella nofronii McLean, 1992 Cithna tenella (Jeffreys, 1869): synonym of Benthonella tenella (Jeffreys, 1869)

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