The following notes on new synonymy of the species of South Asiatic Microlepidoptera of the families Tortricidae, Phaloniidae, Eucosmidae and Glyphipterygidae were made during a visit to the British Museum, Natural History, London, in 1946 and chiefly concern the material in the extensive collection of the late E. MEYRICK. A few additional new synonyms of Eucosmidae and of Carposinidae are not included and will be dealt with in another place. We are greatly obliged to the Trustees of the British Museum for the opportunity to study these collections, and also to Mr. W. H. T. TAMS, of the Division of Lepidoptera of that Museum, for his kind help and suggestions.