The family Pyramidellidae (Heterostropha, Gastropoda) in the Black Sea

Descriptions, distributional data and SEM photographs of species of the family Pyramidellidae from the Black Sea are presented. Fifteen species belonging to six genera can be identified: Chrysallida emaciata (Brusina, 1866); Chrysallida incerta (Milaschewitch, 1916); Chrysallida fenestrata (Jeffreys, 1848); Chrysallida obtusa (T. Brown, 1827); Chrysallida terebellum (Philippi, 1844); Eulimella acicula (Philippi, 1836); Anisocycla pointeli (de Folin, 1868); Odostomia acuta Jeffreys, 1848; Odostomia erjaveciana Brusina, 1869; Odostomia eulimoides Hanley, 1844; Odostomia plicata (Montagu, 1803); Odostomia scalaris MacGillivray, 1843; Noemiamea dolioliformis (Jeffreys, 1848); Turbonilla delicata (Monterosato, 1874); Turbonilla pusilla (Philippi, 1844). The identity of Chrysallida cf. pontica Grossu, 1986 remains doubtful. The following identities have been established: Parthenina tenuistriata Milaschewitch, 1909 [= Chrysallida obtusa (Brown, 1827)]; Parthenina costulata Milaschewitch, 1916 [= Chrysallida terebellum (Philippi, 1844)] and Odostomia rissoiformis Milaschewitch, 1916 [= Odostomia scalaris ( MacGillivray, 1843)]. Thus all species are well known Mediterranean taxa with the possible exception of the poorly known C. cf. pontica.