279 



ir r>\ V\ Cultivo del Trigo en la Republica Argentina. [The 

 ^""c^^tfvaSin of wlfeTif the .Igent.e ^P^^:^-^^, 

 Rural Argentina, Buenos Aires, Iv, no. 4, 15th i eDruan 



and causes a great deal of damage. 



WT.^,PT.T I \ \ Duas novas Especies de Coccidas. [Two new Coccids.]— 

 """"'l^^MleupLZaS. Luo, xi, 1919, pp. 451-457, 1 plate. 



Eriococcus coffeae from coffee twigs, and Diaspis flava from the 

 leaverof a forest tree, are described as new from Brazil. 



Z.CHER (F) NeuzeitlicheSchadlingsbekampfung. [Modern Methods 

 f rnmhpting Pests l—Di^ Gartenwelt [sine loco], xxv, no. 9 

 M.]Tp 84i7.^fgsr ^ plate. [Received 4th Apnl 1921.] 



This arlicle describes in a popular -^^ UnVef slt" an^^^^^^ 

 spraying against insect pests as practised m the United Sta es, and tne 



fLigation pro^esses^^^^^^^^^ 



XrLmTrT^rol'anVan arsenical cW. but np to^he present 



- •Sfl:;S-^^^^ardS^^^^^ tan 



forest trees. 



Heymoxs (R) Die Frassfiguren der Hypoborinen [The Mine 



Patterns of Hypobormae.i-Z..7scA.. wissen Insekienbiol., 

 BtTlvino. 5-6^ 15th March 1921, pp. 81-90, 4 figs. 

 The characters of the mines made by bark-beetles often provide 

 an easier r^eans of identification than examination of the beetles. 



'^T^His'^'aper deals with the mines of the genera Hypoborus and 

 ihis paper aeais wil ..„•„„ ^gnus Dacrvostactus, of which 



Liparthrus, as well as the Alrican geiiub ^T ''i,, ^^.^es known 

 D kolbei Schauf., from South-west Africa, is the only species Known. 

 V. Rotoei oi^iidui., rninpc; of LiMrtiruni colchicum, bem., 



hnih^'i Srhauf and Hypoborus ficus, Er. These mines are 

 Stcteritefby ^n enlargement of the -other gallery to a roonw 

 chamber from which the larval mines radiate. I"/^,f,, '^^'^, ^^ 

 Uparthrum and Dacryostachus the chambers are hned with niches 

 in which the eggs are deposited singly. 



KiEiN-E (R^ Der Rapsglanzkafer, Meligethes aeneus F., und die 

 "^ andirr^ehaMiehe'p^ax^^^ [The Rape Beetle, M^a.-...^^^^^^^ 



Agricultural Practice. ]-Zn7sc/rr wissen. Insektenhol., berhn, 



xvi no. 5-6, 15th March 1921, pp. 90-100. 

 The author accepts the results of Burkhardt and von Lengerken 

 {R.A..E, A, ix, 64], and discusses their suggestions as to the choice 

 of early-flowering varieties of rape. 



