Abstract
Molluscs drifted on the coast of Kikai-jima in Amami Islands are studied. Drifted shells are collected from ten sites at ebb tide in late June, 2014. The Kikai molluscan fauna is composed of 94 species of shelled molluscs, 36 bivalves and 58 gastropods. The fauna is also dominated by rocky-shore species such as Barbatia fusca, B.lacerata, Strombus luhuanus, Cypraea caputserpentis, Conus flavidus etc. The fauna contains many coral reef elements such as Tridacna crocea, T.maxima, Cypraea annulus and C.moneta. From the specific composition, the fauna is assigned to tropical marine climate.