An updated list is provided of the 55 spp. known to occur in New Caledonia, with some behavioural and distribution data, and with information on possible origin of the spp. which found and colonized the island. The new taxa described are: Adversaeschna brevistyla caledonica ssp. n. (holotype S: New Caledonia, Yate-Goto Rd, 22-11-1983), and Synthemis pamelae sp. n. (holotype 3 : New Caledonia, Mt Koghis, 9-V-1983). Also described are the previously unknown 3 Metaphya elongata Campion and the previously unknown 9 Synthemis serendipita Winstanley. All type specimens are deposited at CUMZ, Cambridge, UK.