A taxonomic revision is presented of the genera Discocalyx Mez, Fittingia Mez, Loheria Merr., and Tapeinosperma Hook.f. in New Guinea and partly in the adjacent islands, mainly in the Moluccas and in the Solomon Islands, with keys to the species, detailed descriptions of all taxa, and an enumeration of the collections studied. A key to all genera of the Myrsinaceae occurring in Eastern Malesia is added.