p. 131 - 141 Scapharca inaequivalvis (BRUGUIERE) - A NEW SPECIES IN THE BLACK SEA M-T Gomoiu Romanian Marine Research Institute Constanta Abstract The paper presents the bivalve Scapharca inaequivalvis (BRUGUIERE) - a new species for the Black Sea and the Romanian littoral. The author, based on the analysis of live samples and numerous shells collected on Mamaia beach in March 1984, considers that the new colonist penetrated into the Black Sea in 1980-1981.