392 



Johnson (C. W.). Parasites of Archips cerasivorana, Fitch. — Pysche, 

 Boston, Mass, xxiii, no. 3, June 1916, p. 81. 



The following parasites were reared from the Tortricid, Cacoecia 

 {Archi2Js) cerasivorana, the webs of which were collected during 

 June 1915 : — Diptera : Dichoetoneura leucoptera, Johns., and Neopales 

 tortricis, Coq. Hymenoptera : Bass7is agilis, Cvess., and Labrorychus 

 prismaticus, Nort, Pimpla (Itoplectis) conquisitor. Say, was reared 

 from nests obtained during the previous year. 



Dean (W. S.). Manufacturing Tests of Cotton fumigated with 

 Hydrocyanic-Acid Gus.— U.S. Dept. Agric, Washington, B.C., 

 Bull. no. 366, 24th April 1916, 12 pp., 9 tables. [Received 

 21st July 1916.] 



Tests with cotton which had been fumigated with hydrocyanic acid 

 gas for the destruction of the pink boll worm [Gelechia gossypiella] 

 showed that this treatment does not affect to any material extent the 

 spinning qualities, tensile strength, bleaching, dyeing or mercerising 

 properties of the cotton. 



Chittenden (F. H.). The Rose-Chafer: a Destructive Garden and 

 Vineyard Pest. — U. S. Bept. Agric, Washington, B.C., Farmers' 

 Bull. no. 721, 28th April 1916, 8 pp. 4 figs. [Received 21st July 

 1916.] 



Macrodactylus subspinosus, F, (rose chafer) is very injv.rious in the 

 ■eastern parts of the United States, and occurs less commonly in Canada 

 and westward to Oklahoma and Colorado. The food-plants are 

 extremely varied, including fruit and shade trees, shrubs, vegetables 

 and grasses. The roots and all aerial portions except the stems of the 

 hosts are attacked. Adults emerge from the ground during June, and 

 after pairing, the female deposits singly from 24 to 36 eggs a few inches 

 below the surface of the soil. Feeding on flowers, leaves and fruit 

 takes place throughout the adult stage, which lasts about three weeks. 

 The larvae, which hatch in two or three weeks, feed mainly on the roots 

 of grasses until autumn, when they go down more deeply into the soil 

 for hibernation. Pupation occurs in April or May ; the duration of this 

 stage is from two to four weeks. Control measures include hand-picking 

 and the use of arsenicals against the adults, and the destruction 

 by ploughing, etc., of larvae and pupae. This operation should be 

 carried out in the latitude of northern Ohio between 25th May and 10th 

 June. Early-flowering plants, such as spiraea, magnolia, white roses, 

 etc., serve to attract the beetles from the main crop. The arsenical 

 recommended is 4 or 5 lb. lead arsenate paste in 50 U.S. gals, water, or 

 Bordeaux mixture or lime-sulphur. 



The Mally Fruit Fly Remedy. — Union of S. Africa. Bept. Agric, 

 Pretoria, Div. Entom. Bull. no. 83. 1915, 8 pp., 1 plate, 2 figs. 

 [Received 19th July 1916.] 



This bulletin describes the Mally fruit fly poison bait [see this Revieiv, 

 Ser. A, i, p. 195 ; ii, p. 706] and the method of its application for the 

 prevention of maggots in fruit by the destruction of the adult flies before 



