Language: Italian
Volume 8 describes 110 fossil shell species in the family Pyramidellidae, in the following genera: Pyramidella (2 species), Bacteridium (1 species), Eulimella (11 species), Chrysallida (30 species), Odostomia (18 species), Odetta (1 species), Ondina (3 species), Turbonilla (38 species), Eupartenia (1 species), Ebala (3 species). Every species is accompanied by the original name and the book’s title where the author described it. This is followed by a large bibliography, the distinguishing characteristics, and, where possible, the original diagnosis. Also included is a list of the fossil beds and their temporal and spatial distribution. Finally. observations on similar species and comments on nomenclature and ecological spaces are given. There are alphabetic indices by species name and generic and subgeneric name. The bibliography lists 350 titles.
Six new species are described: Chrysallida enricoi, C. silviae, Odostomia lydiae, Turbonilla fiorenzae, T. plioperstricta, and T. scissa.