400 



the spring migration to clover. Eggs are laid abundantly on Anjou 

 pear, Hungarian prune and quince, but the insect apparently shows 

 no preference for apple leaves. 



The method of control by means of the Coccinellid, Hippodmnia 

 convergens, Guer., has been tried experimentally, and if it should prove 

 successful, would be far cheaper than the use of sprays. 



The pasturing of a few head of stock continuously in clover stubble 

 during the summer does not completely destroy the Aphid, but a 

 flock of 1,000 sheep pastured for a full week in December on a 60-acre 

 field, partly in grain and partly in clover, resulted in its complete 

 extermination in that field. The problem of seed production cannot, 

 however, be settled by this means, since a new infestation may arise 

 in the summer within 6 or 8 weeks, the time usually required for the 

 production of a crop of red clover seed. 



Edmundson (W. C). Sprays for the Control of San Jcs6 Scale, — Univ. 

 Idaho Agric. Expt. Sta. Dept. Hortic, Moscoiv, Id., Bull. no. 108, 

 February 1918, 16 pp., 7 figs. [Received 22nd July 1918.] 



This bulletin gives a detailed account of experiments in combating 

 Aspidiotus pernicios'us by spraying with the sulphur sprays : — 

 Lime-sulphur, soluble sulphur, Spra sulphur, and dry lime-sulphur ; 

 and the oil sprays : Scalecide, crude oil emulsion from virgin crude 

 oil, crude oil emulsion from oil testing 26° Baume, and dormant 

 soluble oil. 



The results obtained by the use of lime-sulphur were very satis- 

 factory, and its use is to be recommended in preference to that of 

 soluble sulphur. Dormant soluble oil also gave very good results, 

 but the best of all were obtained by the use of scalecide, which could 

 be relied on to clear a badly infested orchard, since it destroyed 99 

 per cent, of the scales, althovigh its cost is almost prohibitive. 



FuLLAWAY (D.), Division of Entomology. — Hawaiian Forester & 

 Agriculturist, Honolulu, xv, no, 4, April 1918, pp. 90-91. 

 [Received 25th July 1918.] 



During the month of March the insectary handled 25,500 pupae 

 of the melon fly {Daciis cuctirhitae], from which were bred 1,467 

 individuals of Opius jletclieri. The distribution of parasites was as 

 follows: O.fletcheri, 1,502 ; Diachasma fullaivayi, 123; D. tryoni, 190; 

 Opi'us humilis, 75 ; Tetrastichus giffardianus, 80 ; Galesus silvestrii, 

 700 ; Dirhinus gijfardi, 200 ; and Paranagrus oshorni, 30,200, 



Tkabut (Dr.). L' Arboriculture fruitiere dans le Nord de I'Afrique : 

 Maladies et Ennemis du Prunier. [Fruit Trej Cultivation in 

 Northern Africa : Diseases and Enemies of Plum Trees.] — Bull. 

 Agric. Alger. Tun. Maroc, Algiers, xxiv, no. 5, May 1918, p. 89. 



A Buprestid, Capnodis sp., in some localities of northern Africa, 

 particularly on the coast, is a serious obstacle to the cultivation of 

 plum trees. As soon as the beetles appear on the trees, they should 

 be picked off. In order to prevent oviposition, which occurs in May 

 and June in crevices of the bark at the base of the tree and on the 



