14 



larvae, and of these, plovers are so useful that landowners have for- 

 bidden the collection of their eggs. The author advises rolling by 

 night, the strewing of kainit or lime, or spraying with a solution of 

 kainit. 



ScHAXDER (R.) & Krause (F.). Die Krankheiten und Schadlinge 

 der Erbse. [Diseases and Pests of the Pea.] — Abteil. Pjlanzenkrankh. 

 d. Kais. Willi.- Inst. f. Landiv., Bromberg, Flugbl. nos. 29 & 30, 

 1918. (Abstract in Centralbl. Bakt. Paras. Infekt., Jena, lite 

 Abt., liii, no. 22-24, 1st June 1921, pp. 603-604.) 



Sitona lineata feeds on the edges of the leaves of peas ; young 

 plants must be sprayed with Urania green, or collection of the adult 

 weevils with nets may be resorted to. Collection of the larvae is the 

 only practical measure against Polia {Mamestra) pisi. Against 

 Aphids, Acyrthosiphon pisi {Siphonophora ulmariae) and Aphis 

 rumicis (papaveris) , a spray containing 2 per cent, soft soap and 0-5 per 

 cent, lysol is effective. Nematodes (Tylenchus dipsaci {devastatrix) 

 and Heterodera schachtii), wireworms and Melolonthid larvae also 

 infest peas. The pods and seeds are attacked by a gaU-midge, 

 Contarinia pisi ; Coleoptera, Apion vorax and Brnchus pisi ; and 

 Lepidoptera, Cydia {GraphoJitha) dorsana and C. nebritana. Early 

 varieties suffer less from these moths 



Kraus (R.). Zur Frage der Bekampfung der Heusehreeken mittels 



des Coccobacillns acridiorinn, d'Herelle. [The Control of Locusts 

 by means of Coccobacillns acridioritm.] — Centralbl. Bakt. Paras. 

 Infekt., Jena, lite Abt., liv, no. 1-2, 30th June 1921, pp. 50-52. 



The contents of this paper, which calls attention to the doubtful 

 value of Coccobacillns acridiorum, are substantially the same as those 

 of one already noticed {R.A.E., A, ix, 600]. 



Stranak (F.), Uzel (J.), Baudys (E.) & others. Zpravao chorobaeh 

 a skudeich rostlin Kulturnieh v Cechaeh za rok 1918. l-\ Com- 

 munication on the Diseases and Pests of Cultivated Plants in 

 Bohemia in \9\d,.]—Zemedelsky Arch., Prague, 1920, pp. 80-96, 

 195-202. (Abstract in Centralbl. Bakt. Paras. Infekt., Jena, 

 lite Abt., liv, no. 3-7, 12th July 1921, pp. 155-156.) 



Stored flour was infested with the mites, Tyroglyphns farinae and 

 Cheyletus eruditus. Observations in connection with beet Nematodes 

 show that all specimens of seed-beet that show even the slightest 

 sign of injury must be destroyed. The caterpillars of Euxoa segetnm 

 were destroyed either by means of a powder obtained from larvae 

 killed by Tarichiiim megaspermum or — especially in sandy, porous 

 soil — by watering with a 2 per cent, solution of potassium cyanide. 

 An important parasite of these caterpillars is Macrocentrus collaris, 

 Spin. The male moths are attracted by light ; the females by baits, 

 such as syrup, beet, and dried stone-fruit. Nygmia phaeorrhoea 

 [Euproctis chrysorrhoea) did much harm to pear trees, and in some 

 cases other fruit trees and oaks were attacked. 



Raspberpy^ pests included Lasioptera riibi and a beetle, Bytiirus 

 fumatus. Near Prague Gracilaria syringella is abundant. Eiilecaniiim 

 {Lecaniiim) corni occurs on Robinia. 



