A preliminary revision of the Monacha (Paratheba) rothii (L. Pfeiffer, 1841) complex revealed conspicuous differences in the proportions of the genitalia and shell sculpture. The complex includes at least four species. Monacha (Paratheba) rothii (L. Pfeffer, 1841) is restricted to the Cyclades, Monacha (Paratheba) pseudorothii n. sp. to the East Aegean islands from Ikariá to Anáfi, Monacha (Paratheba) maasseni n. sp. to southern Rhodes and Monacha (Paratheba) cretica n. sp. to western Crete. The distribution of these species and anatomically unknown forms of the complex is illustrated on an UTM-grid-map.