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Une petite collection de crevettes Pontoniinae provenant de Noumea, Nouvelle-Caledonie, est decrite. Des neuf especes, deux sont nouvelles pour la science, Onycocaris longirostris et Periclimenaeus rastrifer, et trois pour la faune de Nouvelle-Caledonie. La collection provient de l'llot Maitre, Baie des Citrons, Noumea, d'une profondeur d'une vingtaine de metres. Les crevettes etaient associees a des Eponges, a des Crinoides, a des Asteroldes et a des Ascidies; pour plusieurs hotes, ce sont de nouvelles associations. La faune des Pontoniinae de Nouvelle-Caledonie est brievement passee en revue. A B S T R A C T The caridean fauna of the extensive coral reefs of New Caledonia has been little studied. Through the kindness of M. Y. MAGNIER, Director of the Aquarium de Noumea, a variety of specimens was recently made available for study. All species were commensals of other marine invertebrates, and were obtained from their host animals held in the reserve tanks of the aquarium. All samples had been recently collected from Ilot Maitre nearby in the Baie des Citrons, Noumea, from a depth of about 20 m. I am most grateful to M. MAGNIER for the opportunity to report upon the collection. I am also indebted to Dr. J. FOREST and Dr. A. GILLES, who provided some of the specimens of Periclimenes affinis, also from Noumea, and to Dr. J. VACELET, for the identifications of the sponge hosts