Abstract
The present paper contains a revision of the species of Rissoidae which were collected by the Norwegian North Atlantic Expedition 1876–78. One new species, Alvania pseudosyngenes, is described. Types are selected of the species described by Friele. Further information, most often based on unpublished material in Scandinavian museums, on the variation, distribution, and taxonomy of these species, is given. The determination of some specimens is corrected.

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