204 



bore into them and feed and transform into adults within them. 

 The bark on attacked portions of the tree shows dead patches that 

 are particmarly evident in May ; the leaves wither and finally die. 

 All infested branches should be removed in May and June. 



Del Guercio (G.). Moreschiella roburdla. n. sp., and M. ilicicola, 

 n. sp., Diptera injurious to the Oak and Holly Oak respectively, 

 in Italy. — VAgric. Colon. Florence, xii, no. 6, 1918, pp. 358-369, 

 14 figs. (Abstract in Mthly. Bull. Agric. Intell. & PI. Bis., 

 Rome, X, no. 4, April 1919, p. 503.) [Received 15th March 1920.] 



Two new Cecidomyids are described from Tuscany, namely, Mores- 

 chiella roburdla, the larvae of which live in the cupules of Quercus 

 robur, and M. ilicicola, the larvae of which occur in the acorns of 

 Quercus ilex. 



Crop Pest Campaigns. — Cyprus Agric. Jl., Nicosia, xiv, part 3-4, 

 XV, part 1, January 1920, pp. 149-152, & 166. [Received 10th 

 March 1920.] 



In 1918 40,000 orange and lemon trees were sprayed with Kme- 

 sulphur against scale-insects, with such success that only 21,345 had 

 to be sprayed in 1919. 



Phthorimaea operculella [Liia solanella) (potato moth) was first 

 recorded in Cyprus in 1918. It was only about a third as severe in 

 1919, the campaign against it being on the same lines as in the 

 previous year {R.A.E., A, vii, 70, 88]. This moth does not attack the 

 winter crop, which is lifted in November. It only attacks exposed 

 tubers, and all infested ones should be destroyed. Stored potatoes 

 should be protected with a layer of straw covered with earth, and 

 the pile ventilated and well drained. 



Drastic measures a few years ago have greatly lessened the attacks 

 of the cotton bollworm {Earias insulana). If bolls are- attacked 

 they should be burned, as also the roots after the crop has been 

 gathered. Paris green sprayed twice with an interval of fourteen 

 days is an effectual preventive. 



In 1919 a small Trypetid fly attacked celery. The larva feeds inside 

 the leaves. Affected leaves should be burned to prevent a second 

 generation of the insect. 



Andrews (E. A.). A Preliminary Note on the Present State of the 

 Mosquito-Blight Enquiry. — Qtrly. Jl. Scient. Dept. Ind. Tea 

 Assoc, Calcutta, 1919, part iv, pp. 119-129. [Received 15th 

 March 1920.] 



This paper is a summary of the results that will shortly be published 

 of investigations on the relation between the tea mosquito {Helopeltis 

 theivora, Waterh.) and the soil. The soil affects the tea bush, and this 

 being the source of the insect's food-supply, controls its rate of develop- 

 ment. The effect of climate on soil is considered, and it is shown that 

 excessive drought may increase habihty to attack as much as excessive 

 moisture, though moderate dryness lessens the habihty to infestation ; 

 hence the importance of drainage. 



