352 THE CANADIAN ENTOMOLOGIST 



Spiders Collected in Nova Scotia and New Brunswick by Roht. 

 Matheson in 1912. By J. H. Emerton. Seventy-two species are 

 listed. 



Publications of the Entomological Branch, Dominion 

 Department of Agriculture. 



In the effort towards increasing food production the Entomo- 

 logical Branch is doing valuable national service. In connection 

 with this work a series of circulars or "Crop Protection Leaflets" 

 were issued and distributed during the early part of the year to be 

 of timely value to growers during the present season. These leaf- 

 lets dealt with the most approved methods of controlling the more 

 serious insect pests, and are all appropriately illustrated. 



Those published during 1918 are as follows: 

 No. 3. Cutworms and Their Control. By Arthur Gibson. 



Root Maggots and Their Control. By Arthur Gibson'. 

 Prevent White Grub Injury. By Arthur Gibson. 

 Hoiv to Control Locusts or Grasshoppers. By Arthur 



Rats and Mice. By C. Gordon Hewitt. 

 Aphids or Plant Lice. By Wm. A. Ross. 

 The Pea Weevil. By Arthur Gibson. 

 Arsenate of Lime. By George E. Sanders. 

 The following articles by members of the staff of the Entomo- 

 logical Branch have appeared in the pages of the Agricultural 

 Gazette, vol. 5, 1918. 



The Black Cherry Aphis. By Wm. A. Ross (No. 1, pp. 13-16). 

 Describes the history, habits and depredations, and the life-history 

 of this pest. Illustrated from four photographs. 



Some Results of Scientific Research on Insect Pests in Canada. 

 By C. Gordon Hewitt, D. Sc. (No. 2, pp. 128-132). A brief 

 exposition of the value of entomological research to agriculture 

 and forestry as illustrated by some of the more striking results of 

 the work of the Dominion Department of Agriculture. 



The Alfalfa Looper, Autographa calif ornica Speyer. By Arthur 

 Gibson. (No. 2, pp. 132-136). This insect, which is widely dis- 

 tributed in Western North America, has been known as a pest in 

 Canada only since 1914, when an outbreak occurred in British 



