Dorsanum Gray, 1847, Proc.Zool. Soc. Lond. p. 139. Type species by OD Buccinum politum Lamarck, 1822 (non Roeding, 1798) = B.miran Bruguiere, 1789. Recent, West Africa. GEOGRAPHICAL DISTRIBUTION. Recent, West Africa. Fossil from Mio-Pliocene deposits of Europe. The animal lacks metapodial tentacles, head-tentacles are short but eyes are present. The shell is aso appreciably different to Bullia . Egg-capsules contain many eggs and young hatch as pelagic veliger- larvae. The radula differs from Bullia and Buccinanops, especially the lateral teeth which are always bicuspid . Only 4 species of Dorsanum s.lato are known from West Africa.