A revision of the genus Deltocyathus Milne Edwards & Haime, 1848 (Scleractinia, Caryophylliidae) from New Caledonia, with the description of a new species

Based on part of the material collected during the HALIPRO 1, BATHUS 3, BATHUS 4, and NORFOLK 2 expeditions by the Muséum national d’Histoire naturelle, Paris off New Caledonia, 10 species of scleractinian corals belonging to the genus Deltocyathus were identified: D. magnificus, D. rotulus, D. suluensis, D. vaughani, D. ornatus, D. heteroclitus, D. corrugatus, D. crassiseptum, D. cameratus and D. inusitatus n. sp. These 10 species are fully described and illustrated, their distributional and bathymetric ranges are given. A brief history and an identification key for all species belonging to this genus are provided.