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The occurrence of new Pseudamnicola species and other freshwater hydrobiid gastropoda from East Anatolia, Turkey, is discussed. The geological history of the area, starting from the Miocene Tethys Sea and its shores, is summarized. In this context the endemic character of the molluscan fauna of the Golbasi lake area near Adiyaman is mentioned, and a new Gyraulus subspecies is described from the region. New taxa: Pseudamnicola bilgini n. sp., Pseudamnicola intranodosa n. sp., Orientalina caputlacus n. sp., Belgrandiella edessana n. sp., Belgrandiella nemethi n. sp., Belgrandiella libanica n. sp., Gyraulus piscinarum acutissimus n. ssp. 11 pp., 27 figs, gr. 8.…

8 pp., 3 figs, gr. 8.

Two species of Theodoxus belonging to different subgenera occur in SW-Anatolia. The distribution of Theodoxus (T.) heldreichi is discussed and a new subspecies (T. heldreichi fluvicola) is described. New taxon: T. heldreichi fluvicola n. ssp. 5 pp., 2 figs, 8.

New taxon: Sheitanok amidicus n. gen., n. sp. 4 pp., 2 figs, gr. 8.