428 



Ramsay (A. A.). The Mixing of Sprays.— J^-nc Gaz. N.S. W., Sydney, 

 XXX, no. 6, June 1919, pp. 428-429. 

 Owing to the efficacy of combined insecticides and fungicides 

 becoming more and more established, a diagram and table of compatible 

 and non- compatible mixtures are given to assist the fruit-grower in 

 mixing such sprays. 



Terry (H. B.) & Schlupp (W. F.). Tests of Lead Arsenate. 

 Effectiveness of different Brands in controlling Codling Moth — A 

 Progress Report. — Reprint from S. African Fruit Grower, Cape 

 Town, May 1919, 8 pp. [Received 13th August 1919.] 



Tables are given showing the comparative efficacy against Cydiu 

 fomonella of the different brands of lead arsenate tested in 1917-18 

 and 1918-19 in areas of summer rainfall in South Africa. 



The conclusion arrived at is that no one of the proprietary brands 

 tested is markedly inferior to the others. Zinc arsenite also gave 

 good results, but caused serious scorching of the fruit and foliage. 



Chittenden (F. H.). The Rice Moth. — U.S. Dept. Agric, Washington, 

 D.C., Bull. 783, 14th July 1919, 15 pp., 5 plates, 2 figs. 



Corcyra cepJmlonica, Staint., has been known in the United States 

 since 1911, but was not definitely identified until 1916. It causes 

 serious damage to stored rice and all forms of cocoa and chocolate, 

 whether sweetened or not. It also breeds in ships' biscuits and 

 sesame seeds. Its habit of feeding on cacao beans is probably an 

 acquired one. 



All stages of the moth are described. Little is known of its life- 

 history, in which it seems greatly to resemble the Indian meal moth, 

 Plodia interpunctella, Hbn., and the fig moth, Ephestia cautella, Wlk. 

 It has been found associated with Silvanus surinamensis, L. (saw- 

 toothed grain beetle), Tribolium castaneum, Hbst. (ferrugineum, F.) 

 (rust-red flour beetle), Rhizopertha dominica, F. (lesser grain borer), 

 Lophocateres pusillus, Oliv. (Siamese grain beetle) and Calandra 

 oryzae, L. (rice weevil). 



The moths disappear during the cold weather, but seem to breed 

 continuously at room temperature, although under laboratory 

 conditions only two generations could be obtained in a single rearing 

 jar. The insect requires a very short time for development, which 

 varies according to climatic conditions. The cycle in the summer 

 from egg to egg occupies about 28 to 42 days. 



The remedial measures advocated are thorough cleaning and 

 fumigation of all infested store rooms, sacks etc. by means of hydro- 

 cyanic acid gas, sulphur dioxide, carbon bisulphide, or by heat, the 

 temperature required being from 120°-130°F. Rice and cacao 

 beans are however damaged by exposure to the latter temperature 

 for more than an hour. 



Culver (J. J.). A Study of Campsilura concinnata, an imported 

 Tachinid Parasite of the Gipsy Moth and the Brown-tail Moth. — 



U. S. Dept. Agric, Washingtofi, D.C., Bull. 766, 10th July 1919, 

 27 pp., 1 plate, 1 map, 10 figs. 



The Tachinid fly, Compsilura concinnata, Meig., was imported 

 into the United States in 1906 from various European countries as 



