Skeletal revisions (generic delimitations, keys, specific distinctions, synonymy and typifications) are presented of the Malesian genera Anthocarapa (1 or 2 species with one new combination), Aphanamixis (3 species), Lansium (3 species with one new combination), Reinwardtiodendron (7 species with two new combinations) and Sandoricum (5 species of which one is new, S. caudatum ). Special attention is given to the problems of taxonomy in the cultivated races of Sandoricum koetjape and Lansium domesticum and in the complex which is Aphanamixis polystachya. All names published in these genera and Pseudocarapa are disposed of, two in the last being transferred to Dysoxylum, leaving. Pseudocarapa monotypic.