450 



Flint (W. P.) & Malloch (J. R.). The European Corn Borer and 

 some similar Native Insects. — Illinois State Nat. Hist. Survetj Bull, 

 Urhana, xiii, article x, June 1920, pp. 287-305, 44 figs. 



This article gives an account of the life-history oi Pyrausta nubilalis 

 (European corn-borer), and of the damage it does, followed by an 

 account of allied and other insects that resemble it, including Pyrausta 

 ainslei {obumbratilis), P. penitalis, P. cajfreii, sp. n., the corn ear worm 

 [Heliothis obsoleta], the fall army worm [Laphygma frugiperda], the 

 common stalk borer [Papaipema nebris], Depressaria heracleana, and 

 another Tineid. The distinguishing characters of the species of 

 Pyrausta are given in detail. 



MiNANGOiN (N.). La Culture de la Betterave dans I'Afrique du Nord. 

 — Rev. Agric. de VAfriquc du Nord, Algiers, xviii, no. 24, 9th 

 January 1920, pp. 25-28. [Received 18th August 1920.] 



In the portion of this paper dealing with the diseases and insects 

 affecting beet in Northern Africa it is stated that the chief damage is 

 caused by the larvae of Rhizotrogus sp. In France this beetle is largely 

 destroyed by fowls, and the portable fowlhouses used for transferring 

 the birds to the fields are described. An alternative, but costly, 

 measure is the injection of carbon bisulphide into infested areas. In 

 France this crop is also attacked by Nematodes, Haltica sp., and 

 Atolnaria linearis. 



MiNANGOiN (N.). Le Vignoble Tunisien. — Rev. Agric. de VAfriqiie du 

 Nord, Algiers, xviii, no. 26, 30th January 1920, pp. 71-72. 

 [Received 18th August 1920.] 



The usual insect pests of vines do not attack these plants in Tunisia, 

 the vine moths, etc., being absent ; crickets are the only important pests. 



An infestation of Phylloxera occurred in 1906, but owing to the 

 energetic steps taken, its presence has been confined to a limited area. 



Vermeil (P.). Les Cochenilles et leur Destruction. — Rev. Agric. de 

 VAfrique du Nord, Algiers, 'xviii, nos. 32, 50 & 53, 12th March, 

 16th July & 6th August 1920, pp. 186-188, 47-50 & 113-115, 5 

 figs. [Received 18th August 1920.] 



The scale-insects described as occurring in the north of Africa and 

 the south of France include : Pseudococcus (Dactylopius) citri ; Coccus 

 (Lecanium) hesperidum ; Saissetia {Lecanium) oleae ; Ceroplastes rusei, 

 the natural enemies of which include a Chalcid, Scutellista cyanea, and 

 a Noctuid moth, Eublemnia {Thalpochares) scitula : this scale may 

 be destroyed by wiping the branches in the winter with a rag soaked in 

 a solution containing 10 lb. of carbonate of soda and 3 gals, of cresy], 

 or 2 gals, of lysol, to 100 gals, of water ; Parlatoria zizyphi ; Lepidosa- 

 phes ulmi {Mytilaspis pomorum) ; Aspidiotus hederae (limonii) ; 

 A. perniciosus ; and Chrysomphalus dictyospermi pinnulifera {minor). 



In dealing with these pests treatment must be directed against the 

 emerging young, and spraying should therefore be begun about 15th 

 May and continued to about 15th or 20th August for the control of 

 scales attacking orange trees. Spraying against the scales attacking 

 olive and carob trees should be begun about 10th June and continued 

 until about 10th or 15th September. 



