Abstract
The identity of the mangrove sesarmid crab Clistocoeloma balansae A. Milne-Edwards, 1873, is clarified on the basis of the types from New Caledonia, and fresh material from Vanuatu and the Philippines. Sesarma (Sesarma) tectum Rathbun, 1914, is shown to be a junior subjective synonym of C. balansae A. Milne-Edwards, 1873. A new species, C. melanesi-cum, superficially similar to C. balansae, is described from Vanuatu, New Caledonia, and, Solomon Islands.