A HANDBOOK OF THE TSETSE-FLIES.
A Handbook of the Tsetse-Plies. By Ernest Edward Austen. With 10 Coloured Plates and Illustrations in the Text. (Printed by order of the Trustees of the British Museum. 5s. 6d.)— This handbook, by a high authority at the Natural History Museum, supersedes Mr. Austen's " Monograph," which is now out of print. A knowledge of tsetse-flies is essential to the settlement of white men in large parts of Africa. Our knowledge is happily progressing rapidly, and there are many workers in the field. Fifteen species of Glossina are here dealt with. Two species besides G. palpalis are now suspected of disseminating sleeping- sickness. The connexion of game and tsetse-flies is still an open question on which evidence is desired. The opening chapter deals with the general characters of the genus, and there is a good map illustrating the distribution of tsetse-flies. The illustrations are extremely clear and well reproduced. Mr. Austen's work is a painstaking and trustworthy contribution to scientific literature which will be of the greatest value to medical officers and ento- mologists who are struggling with disease in Africa.
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