429 



and nineteen uncultivated food-plants. Very little is known about 

 the natural enemies of this moth. The ground beetle, Pterostichus 

 scitulus, Lee, and poultry and other birds feed on the larvae. 

 Remedial measures should aim at forcing the development of 

 the plants so that they may outgrow the injury, and at an early 

 harvest, after which the stubble should be sprayed with lead 

 arsenate. 



Chorizagrotis auxiliaris, Grote (army cutworm) feeds on lucerne, 

 sugar-beet, barley and wheat, and is often troublesome on early 

 vegetables. Remedial measures include poison baits, trap furrows, 

 and spraying with arsenicals. Birds and ground squirrels destroy 

 large numbers. Its insect enemies are numerous, the more important 

 being a Chalcid, Copidosoma sp., an Ichneumonid, Amblyteles longiila, 

 Cress., a Braconid, Microgaster sp., and a Chalcid, Berecyntus hakeri, 

 How. 



Porosagrotis orthogonia, Morr. (pale western cutworm) has caused 

 considerable injury to winter wheat. There are at present no satis- 

 factory remedial measures either natural or artificial, and it is uncertain 

 whether the moth will become a serious pest or whether the present 

 abundance will diminish without apparent cause. Irrigation in the 

 autumn may possibly prove of use in combating it. 



UvARov (B. p.). HoBeiiiuMe flaHHbie MHOcipaHHOM JlmepaTypbi no 



TeXHMKe Bopb6bl C CapaHMeeblMH. [The latest Information in 

 Foreign Literature on the Control of Locusts.] — C. X. YHeHblM 

 KOMMTei, Olflejl ripMKJiaAHOM SHTOMOnomn [Agrk. Sci. Co?n- 

 mittee, Dept. App. Ent.], Petrograd, 1922, 14 pp., 4 figs. 



This information on the appliances and methods adopted for the 

 destruction of locusts is taken from foreign literature published in 

 1915-21. 



PuKHov (B. A). 0praHM3auMfl sainmbi Ypowafl 1921 roAa b 



sanaflHOM Cm6mpM OT BpeAHTeneti. [Organisation of Protection of 

 the 1921 Crop in Western Siberia from Pests-.] — Tpyflbl 2rO 

 BcepoccMMCKoro SHTOMO-OnTonaTO/iorMHecKoro CbesAa e fleTpo- 



rpaAB, 25-30 OKTflOpn 1920 rOAa [Proc. 2nd All- Russian Entomo- 

 Phvtopath. Meeting in Petrograd, 25th-30th October, 1920], 

 Petersburg, 1921, pp. 28-37. [Received 21st June 1922.] 



In view of the position of Siberia as the source of the grain supply 

 for European Russia and the great losses there due to pests, particularly 

 locusts, a central entomological bureau has been founded, the status 

 of which has been acknowledged by the Siberian Revolutionary 

 Committee. Work was begun on 15th May 1920, and included 

 mainly observations on the occurrence of locusts. From the oviposition 

 areas located in the various districts it is evident that an even greater 

 invasion might be expected in 1921 than in previous years. 



A detailed plan of campaign is to be worked out, taking into 

 consideration the local conditions. During the past three years the 

 best results were obtained with poisoned baits. During 1919 this 

 method was further developed by the West-Siberian Expedition in 

 the Tomsk district by substituting sawdust and manure for other 



