In discussing the African Trypetidae some mention should be made of the work of the late Dr. Mario Bezzi, who has perhaps done most work on the higher Diptera of Africa and on the Trypetidae in particular. In 1924 in his papers in Vol. xv of the “ Bulletin of Entomological Research ” and in Vol. xix of the “ Annals of the South African Museum,” Bezzi left the classification of the African Trypetidae in as satisfactory a condition as any systematic group could be expected to be at any given time. Some discrepancy was apparent, however, between the classification of the African and of the European Trypetidae, the general classification of the latter apparently not having been touched since Loew's early work. The appearance, therefore, of Dr. F. Hendel's monograph on the Palaearctic Trypetidae in Lindner's “ Die Fliegen der Palaearktischen Region ” was greatly to be welcomed. At the same time, his classification does not agree with that of Bezzi ; Hendel has made numerous nomenclatorial and systematic changes, and the correlation of the two systems will not always be easy.