384 



Feytaud (J.). Pulverisations de Printemps centre le Ver des Pommes. 



■ — Rev. Zool. Ai^ric. S- App., Bordeaux, xx, no. 3-4, March-April 

 1921, pp. 24-25. 



The method of preparing and applying sprays for the protection of 

 fruit trees against Cydia (Carpocapsa) pomonella, L., is described. 

 The insecticides advocated are mixtures of calcium sulphate or 

 Bordeaux mixture and lead arsenate. Of the latter from 17 to 25 oz. 

 are added to a Bordeaux mixture containing 1 percent, copper-sulphate 

 and 5 per cent, fine lime or 2-5 per cent, quicklime. The same amount 

 of lead arsenate may be added to a solution of calcium sulphate corre- 

 sponding to about a 5 per cent, solution of the following concentrated 

 stock solution : 1 lb. of fat lime, 2 lb. of sulphur, and 1 gal. of water. 



The first application should be made before flowering, the second 

 immediately after, and the third about 15 to 20 days later. 



First Annual Report, 1920, of the Cotton Research Board. — Min. Agric. 

 Egypt, Cairo, 1921, 124 pp., 3 pis., 2 ligs., 1 map. [Received 

 9t'h June 1921.] 



The experimental work on cotton carried out in 1920 is described, 

 and a similar programme for 1921 is outlined. The present situation 

 with regard to the pink bollworm [Platyedra gossypiella] and the 

 remedial measures undertaken are discussed [R.A.E., A, ix, 316]. 

 It is estimated that during 1920, 98 per cent, of the larvae were killed 

 in Upper Egypt and about 97 per cent, in Lower Egypt as a result of 

 treating the cotton by heat. 



The outbreak of the new mealy-bug on Hibiscus [he. cit. 317] is 

 briefly recorded. A description of this pest is in preparation under the 

 name Pseudococcus [Dactylopins) hibisci, Hall. 



The investigations planned in 1921 will also include experiments 

 with a view to ascertaining the role played by Oxycarenus hyalinipennis 

 (cotton seed bug) in causing boll shedding and sterility of seeds. 



A bibliography of the chief cotton pests of Egypt, arranged by 

 species, and with annotated suggestions for future research, is 

 appended. 



Brittain (W. H.). Notes on the Life-history, Habits and Control of 

 the Pea Moth [Laspcyresia nigricana, Steph.). — Proc. Eiit. Soc. 

 Nova Scotia, 1919, Truro, no. 5, February 1920, pp. 11-20, 1 plate. 

 [Received 9th June 1921.] 



The life-history of Cydia {Laspcyresia) nigricana, Steph. (pea moth) 

 has been worked out under Nova Scotia conditions, and apparently 

 differs in essentials from that described by authors for other parts 

 of the country [see, however, R.A.E., A, ix, 100, 221]. 



Under artificial conditions the first moths were noticed on 12th 

 July, and continued emerging until 7th August. In the field they 

 probably appear a few days earlier. Eggs are laid from four to seven 

 days after emergence, on the upper surface of the sepals, and never in 

 any other situation. They are sometimes laid singly, or two side by side. 

 More than two larvae have never been taken from one pod. The 

 sepals of partly developed pods are generally chosen for oviposition, 

 thus ensuring suitable food for the larvae. 



Eggs hatched in the insectary in from two to three days, and even 

 different climatic conditions would hardly account for the variation 

 between these and the usual time given, i.e., two weeks. The larvae 



