1920 EXTOMOLOGICAL SOCIETY. 5;l 



It was unfortunate that the seriousness of the 1919 outbreak prevented the 

 few of us engaged in control measures from conducting investigations as to the 

 effectiveness of the various poisons or attractants. When it is considered, however, 

 that the Dominion had but one man in each province and that there was work 

 enougli for a dozen, it will be readily understood why we were obliged to devote 

 all our time to the immediate needs of the farmers. In other words, we became, 

 for the time being, demonstrators and encouragers rather than research men. 

 When we view the results, however, we cannot but feel gratified at the thousands 

 of acres that were saved even though much was lost also. We have surely demon- 

 strated what can be done with more effective preparation,, and as a result organi- 

 zation is well under way to combat the probable outbreak of next year. We know 

 where the eggs are, luiving made a careful survey during the autumn months and 

 this knowledge will help us much in locating the young hoppers as soon as they 

 hatch out. We can tlien attack them immediately ratlier than wait until they 

 invade the crop. 



Deep ploughing has undoubtedly accounted for many eggs, especially in those 

 districts where Melanoplus predominated. Unfortunately the sod land is much 

 more difficult to attend to and I fear that it will, in most instances, remain un- 

 touched. Experiments conducted at the Treesbank Laboratory, have shown that 

 the eggs, even when incased in their usual covering, cannot withstand a temperature 

 of 90°r. for many hours when the sun is shining and, therefore, exposing them 

 early in the season is an effective means of destroying the eggs. A lesser tempera- 

 Tiire. however, is not as effective though exposing the eggs to the vicissitudes of 

 autumn, winter and spring may help to prevent their hatching. 



Turning to the prospects for next year, we cannot, of course, predict with 

 certainty that there will be an outbreak, as weather conditions may intervene, but 

 judging from the past the chances for this are small, in which- case we may expect 

 a worse and more widespread outbreak than the one of 1919. As I said before, 

 I think we shall be prepared. This, however, is a matter that the provinces are 

 chiefly taking in hand. Xaturally we have all been working together against the 

 common enemy and for myself, I should like to take this^ opportunity of expressing 

 my appreciation of the splendid co-operation that has taken place. We have been 

 ill the field together and worked together for the common benefit. 



LIFE-HISTORY NOTES OX SOME SPECIES OF ACRIDIDAE 

 (ORTHOPTEEA) FOUXD IX BRITISH COLUMBIA. 



E. R. BucKELL. B.A., Entomological Latiouatoky. Vernon, B.C. 



In presenting some notes on some species of Acrididae occurring in British 

 Columbia I do so with some hesitation for the reason that I have not been able 

 to complete the life-history of many of the species. My hope, however, is that 

 such notes as I have prepared will prove of service to those undertaking any further 

 ecological and life history studies on western species of Acrididae. 



My thanks are particularly due to Mr. R. C. Treherne for his encouragement 

 and advice during the past two years in this work, and to Messrs. L. P. Rockwood 

 of the U. S. Federal Entomological Station, Forest Grove, Oregon: and Xorman 

 Criddle of the Dominion Entomological Branch, for their kindness in assisting 

 me in the identification of species. 



