The Society for the Preservation of the Fauna of the Empire is taking stock of the faunal conditions of Africa in the light of recent developments, with special reference to investigations that have taken place and are in progress, of the incidence of flyborne diseases and of methods of control of such diseases by direct attack on the fly through the use of insecticides and otherwise, and by treatment of cattle with prophylactics such as antryeide. We have been encouraged to hope that Governments in British territories, including Southern Rhodesia, where controlled killing had been undertaken with a view to eradicating tsetse fly were now disposed to suspend this method of attack for a period pending examination of the results of experiments in progress.