309 



Feytaud (J.). Instruction sommaire pour la defense contre la Cochylis 

 et I'Eud^mis. [Brief instructions for the control of Clysia anibi- 

 guella and Polychrosis botrana.] — Rev. Viticulture, Paris, xliv, 

 no. 1141, 11th iVIay 1916, pp. 350-353. 



This paper gives in a condensed form the usual instructions for the 

 control of Clysia ambigueUa and Polychrosis botrrma. Insecticide 

 formulae are given with a table of the months in which spraying should 

 be carried out ; methods of trapping are also described. 



Los gases asflxiantes en la destrucci6n de la langosta. [Asphyxiating 

 gases for the destruction of locusts.] — Gaceta Rural, Buenos Aires, 

 ix, no. 105, April 1916, p. 513. 



Experiments made in Argentina show that locusts die almos^ 

 instantly in a space saturated with free chlorine ; 2 per cent, o^ 

 chlorine, acting for 30 minutes, causes death within twenty-four hours. 

 AVith 1 per cent, of chlorine or less the results were unsatisfactory. 



Elenco dei Comuni fillosserati o sospetti d'infezione fillosserica a!' 

 31 Dicembre 1915. [A Ust of communes infested by Phylloxeia. 

 or suspected of being so infested on the 31st December 1915.]- — 

 La Campayna, Coma, xvi, no. 249, 15th May 1916, pp. 134-135. 



An alphabetical hst is given of communes known to be infested with 

 Phylloxera in Como, Lecco and Varese. Lists of the communes where 

 the presence of this pest is suspected are also given. 



Feytaud (J.). Recherches sur les pieges-appats : I. Les AppSts. 

 empoisonn6s. [Investigations on bait-traps: I. Poisoned baits.] — 

 Bull. Soc. Etude VuJg. Zool. Agric, Bordeaux, xv, no. 5, May 

 1916, pp. 33-38. 



This paper describes further experiments with bait- traps against 

 Clysia ambiguella and Polychrosis botrana [see this Review, Ser. A, ii, 

 p. 359], for the purpose of preventing the escape of the moths after 

 capture. A modification of the shape of the containers was deemed 

 inadvisable on account of the cost and because difl&culty in exit would 

 mean difficulty in entrance. A change in the composition of the bait- 

 liquid was resorted to. A series of 52 pots were baited with the usual 

 solution of fermenting molasses, three parts per thousand of sodium 

 arsenite being added to the solution in each alternate pot. It was 

 found that over 50 per cent, more adults of P. botrana were taken in 

 the 26 poisoned pots than in the 26 unpoisoned ones, while examples 

 of C. ambiguella were also more numerous. Chrysopid enemies of the 

 vine-moths were also taken in larger numbers, so that with poisoned 

 baits even greater care than usual is required in limiting the trapping 

 period. 



CusHMAN (R. A.) & IsELY (D.). The Cherry Leaf-Beetle, a Periodically 

 Important Enemy of Cherries. — U.S. Dept. Agric, Washington, 

 D.C., Bull. no. 352, 5th May 1916, 26 pp., 9 figs., 4 plates, 7 tables. 



Another account of the Chrysomelid, Galerucella cavicollis, Lee. 

 (cherry leaf-beetle) has recently been published [see this Review, Ser. A,. 



