Gelagna is a genus of predatory sea snails, marine gastropod mollusks in the family Cymatiidae. Species Species within the genus Gelagna include: Gelagna pallida (Parth, 1996) Gelagna succincta (Linnaeus, 1771) References External links Mörch, O. A. L. (1852-1853). Catalogus conchyliorum quae reliquit D. Alphonso d'Aguirra & Gadea Comes de Yoldi [.... Fasc. 1, Cephalophora, 170 pp. [1852]; Fasc. 2, Acephala, Annulata, Cirripedia, Echinodermata, 74 [+2] pp. [1853]. Hafniae [Copenhagen]: L. Klein. ] Cymatiidae