276 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 12 



studies, provided they were assured of reasonable time and freedom in 

 which to complete the investigations. A little planning and coordina- 

 tion along such lines would do much, we believe, to produce a well 

 rounded and comprehensive total of knowledge relating to American 

 insects in all stages. 



Reviews 



Outlines of Economic Zoology, by A. M. Reese, pages I to XVII, 1 to 

 316, 194 illustrations. P. Blakiston's Son & Company, 1919. 



The author correctly states that the study of insects is a large department of 

 science in itself and owing to the difficulty of doing the subject adequate justice within 

 the narrow limits of a small volume, he has confined himself largely to a discussion of 

 a few disease-carrying insects, some of the more common household pests, the honey 

 bee and the silk worm. The greater part of the book is devoted to very concise 

 and interesting discussions of the economic relations of the other members of the 

 animal kingdom and as such will prove of value to the entomologist who desires a 

 recent summary of this character. (Advt.) E. P. F. 



Canadian Bark Beetles, Part I, Descriptions of New Species, Part II, 

 A Preliminary Classification, with an Account of the Habits and 

 Means of Control, by J. M. Swaine, Dominion of Canada, 

 Department of Agriculture, Entomological Branch, Bulletin 14, 

 Part 1, pages 1 to 32, 1917, and Part II, pages 1 to 143, plates 31, 

 1918. 



The first part of this important work is limited mostly to descriptions of new genera 

 and new species and in the second part we have a comprehensive and most excellent 

 classification of Canadian bark beetles, illustrated by a series of exceptionally fine 

 figures showing not only structural details of many of the bark borers but also depict- 

 ing characteristic workings of a number of species. This pubhcation gives within 

 a brief compass, an admirable summary of this important and very destructive group 

 of beetles. The text and illustrations show the work of a man who has had both 

 field and laboratory experience and is, therefore, in a position to discuss the subject 

 matter in the most illuminating manner, (Advt.) E. P. F. 



Studies on the Fruit Flies of Japan ; Contribution I, Japanese Orange 

 Fly, by Doctor Tsunekata Miyake. Reprint from Imperial Cen- 

 tral Agricultural Experiment Station in Japan, Bui. II, No. 2, 

 pages 85 to 165, plates 10, 1919. 



This is a monographic study of the Japanese fruit fly, described as Dacus tsuneonis, 

 the author giving a detailed discussion of both the external and internal structure of 

 the adult, a similar study of the larva and numerous details in regard to the habits, 

 life history and methods of controlling this species. Several associated or allied 

 forms are also characterized. The author is to be congratulated upon the compre- 

 hensive character of his work and it is to be hoped that contribution I will be supple- 

 mented by other equally valuable studies. {Advt.) E. P. F. 



