Pyramidellidae (Gastropoda, Heterostropha) de la Misión Oceanográfica "Seamount 2"

The species of the family Pyramidellidae collected during Seamount 2 expedition to the submarin Atlantic banks south of the Azores are revised. A total of 27 species are described of which 3 are in the genus Chrysallida, 7 in Eulimella, 8 in Odostomia and 9 in Turbonilla. Of this total, 1 species of Chrysallida, 3 of Eulimella, 1 of Odostomia and 5 of Turbonilla were previously known, the remaining 17 being new for science.