The present paper comprises supplementary notes on Ganua, based on material which has come to our knowledge after the last contribution on the genus had been published. In the following text the previous papers have been referred to as follows: Van den Assem 1953 = Rev. Sap. IV. Ganua in Blumea 7 (2), 1953, 364—400. Van den Assem & Kostermans 1954 = Rev. Sap. IVa. Ganua (Add. Notes) in Blumea 7 (3), 1954, 481—483.