Abstract
This paper contains the results of a revision of the pelecypods obtained during the cruise of Michael Sars 1910 in the Atlantic Ocean. The samples have previously been named and published by Grieg (1920, 1931). He listed 29 species. However, the material contained 36 species some of which are rare. Notes on the anatomy and photographs of the valves of some species are given. Species of some genera of the family Verticordiidae described before 1960 are listed and the original figures, all in the same size, are reproduced.