148 THE CANADIAN ENTOMOLOGIST. 



author takes up the different views regarding the development of 

 the insects of to-day and the manner in which the evolution of the 

 highly developed insect with a complete metamorphosis may have 

 taken place. A short bibliography will guide the student to 

 further reading. We heartily congratulate Prof. Carpenter on the 

 pleasing results of what has been by no means a light task, and we 

 feel sure that it will serve to add many new recruits to our ever- 

 increa&ing army. C. Gordon Hewitt. 



A Synopsis of Economic Entomology. By W. Lochhead, Pro- 

 fessor of Biology, Macdonald College, Ste. Anne de Bellevue, 

 P. Que. 113 pages. 

 This work, which has evidently been prepared by the author 

 as a basis for his lectures on Entomology, will be found very useful 

 by others with similar duties to fulfil and especially by science 

 teachers in High Schools and Collegiate Institutes, who are unable 

 to devote much time to the study of insects. Owing, however, to 

 the entire absence of illustrations and the use of terms which are 

 not explained, it will require to be supplemented by some such 

 guide as Comstock's "Manual for the Study of Insects." For 

 these reasons also it can hardly be recommended as a text-book* 

 for students. 



The author might well have enlarged the title to a Synopsis of 

 Systematic as well as Economic Entomology, as the book is nearly 

 equally occupied by the consideration of both these aspects of the 

 subject. 



The work is divided into four parts. The first describes the 

 external and internal anatomy of insects and their metamorphoses, 

 the losses due to them, and an account of those that may be termed 

 beneficial. Part 2 contains keys to insects injurious to farm, 

 garden and orchard crops, including small fruits. These are ar- 

 ranged under the headings of attacks upon roots, trunks or branches, 

 leaves and fruit. Part 3 occupies more than half the volume and is 

 devoted to "a classification and description of common insects" 

 given in the form of keys to orders and families, followed in each 

 case by brief descriptions of the more important species from an 

 economic standpoint. Part 4 describes the various methods, both 

 cultural and artificial for the control of insects. — C. J. S. B. 



Mailed April 11th, 1914. 



