Abstract
The prosobranchs, Skenea nitens and Ammonicera rota, and the opisthobranchs, Odostomia lukisi and Eulimella nitidissima, are reported from Norwegian waters for the first time. These records from western Norway represent considerable extensions of the species’ known ranges. A brief account is given of the horizontal and vertical distributions and the habitat preferences of the species. Some taxonomic and nomenclatural notes are given on A. rota.