ECONOMIC ZOOLOGY — ENTOMOLOGY. 755 



16 (1913), pp. XIII -\-74, figs. 11; abs. in Rev. Appl. Ent., 1 (1913), 8er. A, No. 

 10, pp. 364-367).— The first part of the report, devoted to the biology of the 

 codling moth in the government of Poltava, is followed by a discussion of the 

 literature and experiments with the driving spray method. A number of 

 parasites were reared from the larvje. 



The occurrence of the codling moth in Turkestan and the methods em- 

 ployed in combating it, A. F. Kadetsky (Turkest. Ent. Btantsi(h, 1913, pp. 52, 

 figs. 8; abs. in Rev. Appl. Ent., 1 {1913), Ser. A, No. 10, pp. 367-370).— The 

 codling moth is the most serious insect pest occurring in Russian Turkestan. 

 The small number of parasites attacking it in Turkestan tends to support the 

 view that It has been only recently imported. It is stated that in 1912 Asco- 

 gaster canifrons was found infesting 15 per cent of the caterpillars, appearing 

 chiefly in the gardens near Tashkend, its numbers diminishing gradually in pro- 

 portion to the distance from the town, whereas in the previous year less than 2 

 per cent of the caterpillars were infested. " In the northern Provinces of Rus- 

 sia there is only one brood of Laspcyresia pomonclla in the year; in middle and 

 south Russia, two more or less complete broods; while in Russian Turkestan 

 there are three, two complete and one more or less partial, though considerable." 



On Escherich's discussion of my work on the wilt disease of the gipsy 

 moth (Liparis dispar), W. Reiff {Naturw. Ztschr. Forst u. Landw., 11 {1913), 

 No. 1, pp. 49-54). — A discussion of Escherich's <* review of the work previously 

 noted (E. S. R., 27, p. 659). 



Hyponomeuta malinellus, its bionomics and methods of combating it, 

 S. A. MoKBZECKi {Abs. in Rev. Appl. Ent., 1 {1913), tier. A, No. 9, pp. 345-349). — 

 This moth is said to be found everywhere in Russia ; while it is not a serious 

 pest in the northern and .western Provinces it is a source of veiy serious injury 

 in the southern and southeastern Provinces. The paper includes a discussion 

 of its natural enemies and means of combating them. 



" Barium chlorid when used in 1 per cent or 2 per cent solution (4J to 6 lbs. 

 of barium in about 27 to 30 gal. of water) is considered to be the most effective. 

 One of its disadvantages is the want of adhesiveness, to obtain which it is 

 recommended by some authors to add potato sirup or a solution of resin in 90 

 per cent spirit; while the author recommends the addition of soda (about i lb. 

 for the above quantity). The latter transforms some of the barium into 

 BaCOa, but in his opinion the amount of barium lost in this way is not im- 

 portant, besides it gives the solution a white color, thus facilitating control of 

 the spraying. Another disadvantage is that it burns the leaves of the trees; 

 this, although very serious, can be minimized by careful and rapid spraying. 

 The author states that during 8 years' use of this insecticide under his direction 

 there never was a case of poisoning either of the cattle feeding on the sprinkled 

 grass or of birds." 



Nun moth problems, K. Eschebich {Natunv. Ztschr. Forst u. Landw., 10 

 (1912), No. 2, pp. 65-85). — The subjects discussed in this article Include investi- 

 gations of the value of adhesive bands in combating the nun moth ; the number 

 of pine needles consumed by nun moth caterpillars; the food of young cater- 

 pillars on pine; the resistance of young caterpillars to cold; the importance of 

 aerostatic hairs of young caterpillars; and nonviable eggs. 



" The pink boll worm " (Gelechia gossypiella), G. C. Dudgeon {Agr. Jour. 

 Egypt, 2 {1913), No. 2, pp. 45-48, pi. i).— This article relates tq G. gossypiella, 

 the occurrence of which in Egypt appears to have been overlooked by writers 

 previous to 1911, although specimens have been found commonly in damaged 

 cotton bolls throughout the country for many years. 



• Naturw. Ztschr. Forst u. Landw., 10 (1»12), No. 2-3, p. 84. 

 44429°— No. 8—14 5 



