Cythara thetis is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
This species is considered a nomen dubium.
Distribution This marine species was found off Port Alfred, South Africa.
References
Turton, William Harry. The marine shells of Port Alfred, S. Africa. H. Milford, Oxford University Press, 1932.
External links Tucker, J.K. 2004 Catalog of recent and fossil turrids (Mollusca: Gastropoda). Zootaxa 682: 1–1295.