A partial, Malesian revision of the above listed four genera is given with special remarks on their taxonomy, nomenclature, typification, relationship, distribution, etc. An Identification List is given. Acrocarpus is so far known with only one species, A. fraxinifolius. Afzelia has two widely distributed, variable species both occurring in Malesia: A. javanica and A. rhomboidea. Pseudosindora has been reduced to Copaifera, which consists of 20-30 species mostly occurring in tropical America and Africa. One interesting species, C. palustris, is found in Malesia. Intsia consists of two or more species. In Malesia there are two widely distributed, very variable, difficult species, I. bijuga and I. palembanica. Information on their regeneration and uses have been reviewed.