The genus Eumetula (Gastropoda: Caenogastropoda: Cerithiopsidae) in North European waters, with the description of a new species from the upper continental slope off Norway

Eumetula vitrea, a new species of Cerithiopsidae, is described from the upper continental slope outside western Norway. The taxonomic status of the Eumetula species complex is discussed. While Eumetula arctica is a shelf species rarely found in sub-zero waters, E. vitrea is one of a group of species supposedly found only in negative temperature or water fluctuating between negative and positive temperatures (below similar to 570 m) in the bathyal around the Norwegian Sea.