428 



Serious injury is due to the two species, Schistocera peregrina from the 

 interior of Africa and Dociostaurus [Stauronotus) maroccanus normally 

 found in the Algerian steppes. Up to the present, mechanical control 

 only has been employed in Algeria, but in the outbreak now expected 

 both chemical and biological methods are to be tried. Modifications 

 of the Cyprus barrier are described, and it is suggested that strips of 

 thin (1^5- of an inch) aluminium, 2 J inches high, might advantageously 

 replace the strips of oilcloth which lose their gloss and then no longer 

 keep back the hoppers. vSucli aluminium strip is commercially 

 obtainable at about Ihd. per yard. The shirting used in the apparatus 

 might be replaced by cheap, coarse fabrics steeped in an emulsion made 

 up of 4 quarts water in which 2 lb. of fuller's earth has been stirred, 

 2 lb. of oil being added to the mixture. These steeped fabrics are less 

 likely to be stolen by the natives. The following parasites of locusts 

 are mentioned : — Diptera : Stomatorrhina {Idia) hmata, F. {fasciata, 

 Meig.), Cko)to])hila cana, Macq., Anthrax fenes I ratus, Fall., Chnjsopilus 

 nubecula, Fall., Sarcophaga clathrafa, Meig., S. camaria, L. latropos, 

 Meig.), S. cruentata, Meig., S. affinis, Fall., and S. haemorrhoidal 's, Fall. 

 {nurvs, Rond.). Coleoptera : Mylahris schreiberi, Reiche, TricJwdes 

 ammios, F., T. mnbdlatarum, Oliv. 



Noel (P.). Les Ennemis de I'Avoine {Arena, L.). [The enemies of 

 oats.]— 5(///. Trim. Lab. Eiitom. Agric. Seine Infer., Rouen, pt. 1, 

 January-March 1915, pp. 4-7. 



The following list of insect enemies of oats is given : — Coleoptera : 

 Agriotes segetis, Gyll., Lema cyanella, L., Lema melanopa, Hbst. 

 Thysanoptera : Thrips cereaUum, L., Thrips decora, L. Orthoptera : 

 Phasgonura {Locusta), cantans, Fuess. Rhynchota : Aphis cerealis, 

 Kalt., Aphis avenae, F., Sipha graminis [sic\ Aphis fascifrons, Koch, 

 Typhlocyba aurata, L. Hymenoptera : Cephus pygmaeus, L. Lepi- 

 doptera : Saiyrus dryas, Sc. (phaedra, L.), Aiigiades {Hesperia) sylvanus, 

 Esp., Euxoa (Agrotis) triiici, L., Aphelosetia {Elachista) bedellella, Sircom, 

 A. truncatella, H. S., A. puUicomella, Zell., A. pollinarieUa, Zell.,. 

 Phlyctaenodes {Loxostege) sticticalis, L. Diptera : Oscinis devastatrix, 

 Fll., Oscinis pusilla, Fll., Oscinella {Oscinis) frit., L., Chlorops cereris, 

 Meig., Chlorops messoria, Meig., Chlorops guerinii, Meig., Mayetiola 

 avenae, Marchal, Contarinia ballotae, Kieft'., Agromyza yiigritarsis^ 

 Meig. Acari : Eriophyes tenuis, Nal., Tarsonemus spirifex, Marchal 

 Nematodes : Tylenchus devastatrix, Kahn., Cephalobus rigidus, Sch., 

 Heterodera radicicola, Greefl. 



Noel (P.). Les Ennemis du lin. [The enemies of ^SiX.]—BuU. Trim. 

 Lab. Entom. Agric. Seine Infer., Rouen, pt. 1, January-March 

 1915, pp. 9-11. 



The insect pests of flax include : — Coleoptera : Melolontha melo- 

 lontha, L., Haltica eiiphorbiae, F., Psylliodes chrysocephala, F. 

 Lepidoptera : Phytometra {Plusia) gamma, L., Polia {Mamestra) 

 pisi, L.,Xylina {Calocampa) exoleta, L., Eupithecia linariata, ¥.,Phalonia 

 {Conchylis) epilinana, Zell. 



