Dupont, L. 1979. Note on variation in Diacria Gray, 1847, with descriptions of a species new to science, Diacria rampali nov. spec., and a forma new to science, Diacria trispinosa forma atlantica nov. forma. Malacologia 18 37-52. [Stated date: -- --- 1979; true date: pre 18 May.] {Included species}
