Dear All: If anyone might have access to the following article, I would be most grateful: Kilburn R.N. (1971). On some species of the families Tonnidae, Hipponicidae, Buccinidae, Columbariidae, Fasciolariidae, Psammobiidae and Mactridae (Mollusca) in South African waters. Annals of the Natal Museum 20(3):483-497 Thanks, Juan Francisco.