474 



At Portici the adult Cecidomyiids emerge from galls on Quercus 

 ilex, usually from 10th April to 20th May, and oviposit on the leaf- 

 buds and growing leaves. The larva hatches after 5-6 days and 

 punctures the parenchyma of the upper leaf-surface, forming a gall 

 within which it pupates in the following year at the end of March or 

 early in April. The adult emerges after a few days. The galls are 

 typically single, though they may be close together where many occur 

 on one leaf. As many as 157 lar\'ae have been seen on an eight-inch 

 leaf, though the number is usually less than 100. 



The adults of Platygaster dryomyiae, Silv., appear at the same time 

 as their hosts, but their maximum emergence occurs 1-4 days after 

 that of the latter. They mate at once on emerging from the galls. 

 The female deposits an egg in an egg or newly-hatched maggot of 

 D. lichtensteini. Several females may oviposit in one host, but not 

 more than two larvae develop. These pupate in March or April of 

 the following year within the body of the host, the adults emerging 

 soon afterwards. The stages of this parasite are described in detail. 



Ghesquiere (J). Machines pour le Traitement des Semences de 

 Coton centre les Teignes. [Machines for the Treatment of Cotton 

 Seed against Moths.] — Ann. Gembloiix, Brussels, xxvii, no. 7, 

 July 1921, pp. 234-238. 



The various machines used in the treatment of cotton seed against 

 the pink bollworm [Platyedra gossypiella] in different countries, and 

 particularly in Egypt, are reviewed [R.A.E., A, vi, 42, etc.]. It is 

 remarked that the latest information on the subject (October 1920) 

 indicates Simon's hot air machine [R.A.E., A, iv, 491] as being 

 considered the best for the purpose by the British Cotton Growing 

 Association. 



Lambilliox (L. J. L.). Zophodia Hb. convohdella Hb. ou en est, 

 son Histoire naturelle? [^^'h^t is the Life-history of Zophodia 

 convohdella, Hb. ?] — Rev. Mens. Soc. Ent. Namuroise, Namur, 

 xxi, no. 7, July 1921, pp. 27-28. 



The author has found in July of recent years that gooseberries, 

 when ripe for gathering, were frequently entirely eaten out, leaving 

 a debris of skin and seeds, mixed up with a mass of excrement and 

 bound round with silk threads. Mature caterpillars have been 

 obtained from infested berries and are being carefully' reared for 

 identification of the adults. 



The moth, Zophodia convolutella, Hb., which feeds on gooseberries, 

 was recorded in 1850 at Lou vain from a single indi\'idua], and since 

 that date seems to have remained unnoticed, or at least unrecorded. 



SiCARD (H.). Action de la Bouillie Bordelaise au Pyretlire et de la 

 Bouillie Bordelaise nicotine appliquees en Traitements curatifs 

 contre la premiere Generation d'Eudemis. — Bull. Agric. Alger ie- 



Tunisie-Maroc, Algiers, xxvii, no. 6, June 1921, pp. 103-105. 



With a view to dealing with the vine moth [Polychrosis botrana] 

 and mildew with a single spray application, experiments were conducted 

 to test whether the addition of copper salts would modify the action 

 of pyrethrum, and whether the combination of pyrethrum-soap and 

 Bordeaux mixture would compare in efficacy with the simple solution. 



