390 THE CANADIAN ENTOMOLOGIST 



secticides is rarely possible on an effective scale, and it is neces- 

 sary in most cases to resort to such simple expedients as hand- 

 picking, destruction of affected parts, the use of bait and light 

 traps, bag-nets, etc. Considerable experimental work is being 

 done, however, in the use of insecticides and the introduction and 

 dissemination of parasitic and predaceous insects is also receiving 

 much attention. 



The report is beautifully illustrated by 35 coloured plates of 

 very fine quality, each showing the life-history of a single species 

 of insect. 



RECENT CANADIAN PUBLICATIONS. 

 (Continued from page 356.) 

 The Orthoptera ((Cockroaches, Locusts, Grasshoppers, 

 Crickets) of Nova Scotia; with Descriptions of the 

 Species and Notes on Their Occurrence and Habits. — 

 By Harry Piers, Curator of the Provincial Museum of N. S. 

 From Trans. N. S. Inst. Sc; vol. XIV, pp. 201-356, with 4 

 plates. Halifax, N. S., 1918. 



It is gratifying to note the growing interest in systematic 

 entomology in Nova Scotia. Through the combined efforts of 

 Messrs. Piers and C. B. Gooderham considerable information has 

 been gathered on the distribution and habits of the native species 

 of Orthoptera, a group of which until recently little has been known 

 in the Maritime Provinces. 



The fauna is very sparse, only 26 species having been recorded, 

 although two others are included as being practically certain to 

 occur in the Province. This is somewhat surprising in view of the 

 fact that the Transition Zone is said to be represented in the Pro- 

 vince, and many other species range throughout this zone in 

 eastern North America. Possibly intensive collecting in a larger 

 number of localities will reveal a fair number of additional forms, 

 though the author believes the total number will never exceed 

 about 35. 



In Part I, which contains general matter introductory to the 

 study of the Orthoptera, there is also a valuable historical account 

 of our knowledge of the Nova Scotia species, in which the author 



November, 1918 



