444 



to the action of Hymenopterous enemies. There are, however, 

 indications that conditions are again becoming favourable to it, and 

 the shght infestation now present should be dealt with by crushing 

 the eggs and larvae on the leaves. 



Faes (H.) & ToNDUz (P.). station federale d'Essais viticoles a Lausanne 

 et Domaine de Fully. Rapport annuel-1921.— /4ww. Agric. 

 Suisse, Berne, xxiii, no. 2, 1922, pp. 203-215. 



The value of pyrethrum-soap solution against the vine moth [Clysia 

 amhiguelia] is pointed out [R.A.E., A, x, 231] ; experiments with 

 other substances have also been continued during 1921. Arsenical 

 salts proved to be of undoubted value against Cydia {Carpocapsa) 

 pomonella. 



Other pests recorded for the year include larvae of Tipula oleracea 

 and Polychrosis {Eiidemis) bofrana, which was particularly abundant 

 owing to the favourable temperature conditions. 



De Stefani (T.). Di qualche Insetto dannoso. [On some Injurious 

 Insects.] — // Rinnovamento Econ.- Agrar., Trapani, xvi, nos. 5-6, 

 May- June 1922, pp. 65-69, 92-95. 



The more important insect pests of the apple in the province of 

 Trapani, Sicily, are Hyponomeuta malinelhis, Z., Rhynchites bacckns, L., 

 and a bug, Piezodonts incarnatus, Germ. As regards the last-named, 

 no biological data are available. 



During a severe infestation of H. malinelliis the caterpillars dropped 

 from their webs when wetted by a spray, and many were killed by 

 burning as they hung suspended. It is suggested that a nicotine 

 spray as soon as the larvae hatch will prevent any serious injury. 

 Very few parasites were obtained from a large number of larvae. 

 They included Pimpla roborator, Limner iuni fuscipes, L. velox, and a 

 Mymarid, perhaps Anagrus atomus, Hal., or A. ovivorus, Rond. 



Bogdanov-Katkov (N. N.). XpeHOBbiM JlMCToefl M/iM BaSaHyxa 

 {Phaedon cochleariae, F.).— neiporpaflCKafl C.X. AKBAeMMfl, 

 SHTOMO/iomnecKHM Oiflen HMKonaeBCKOii OnbiTHOM CiaHUMM, 



\Petrograd Agric. Acad., Ent. Div. Nikolaev Expt. Sta.], Petrograd, 

 1922, 82 pp., 2 plates, 88 figs. 



A detailed account is given of the systematic position, anatomy, and 

 morphology of Phaedon cochleariae, F. 



Its life-history and economic importance and the remedies for it 

 have already been noticed [R.A.E., A, ix, 350]. 



GiLMOUR (N.). The Economic Value of Birds.— 76^/? Ann. Rept. 

 Saskatchewan Dept. Agric, 1920-21, Regina, 1921, pp. 88-97. 

 [Received 3rd July 1922.] 



The importance of protecting bird hfe in Canada is urged. When it 

 is realised that, while insects consume daily more than their own weight 

 of vegetable growth, young birds consume daily their own weight of 

 insects, the inestimable value of the commoner insectivorous birds 

 becomes obvious. The Franklin gull is a voracious feeder on grass- 

 hoppers, in search of which it invades cultivated lands. 



