The species of Encyrtidae and Aphelinidae described as new or listed in this paper were among a lot of Coccid-inhabiting parasites received from the Entomological Branch, Department of Agriculture, New South Wales. This material was obtained in Kenya and Uganda during August to October 1935 by William B. Gurney, Entomologist, Department of Agriculture, N.S.W., mostly from Ceroplastes spp. Except for Scutellista sp., only species of Encyrtidae and Aphelinidae are reported upon in this paper. Mr. Gurney visited Kenya and Uganda for the purpose of finding and despatching living parasites of White Wax Scale (Ceroplastes spp.) in East Africa to establish in New South Wales for control of White Wax Scale of citrus trees and shrubs. While in Africa he arranged for Mr. H. Wilkinson, Entomologist, Kenya, and Messrs. H. Hargreaves and T. H. C. Taylor, Entomologists in Uganda, to continue to despatch further consignments of parasitised White Wax Scale after he had left.