103 



the harvest. All floors should be taken up and any grain that has 

 fallen between the boards should be cleared out, and the foundation 

 as well as the walls should be washed with 4 lb. of freshly slaked hme 

 to a bucket of water. The wooden parts of the building may be 

 washed with soda and hme. Pots containing a liquid consisting of 

 barium chloride ancj water (in the proportion of | lb. to one bucket of 

 water) should be placed in the buildings during hot weather as traps 

 [R.A.E., A, V, 299J. 



ZVIEREZOMB-ZUBOVSKY (E.). HepBMBOCTb BmUCHb M B0pb5-b CTj 

 Heif. [The Cherry Maggot and its Control.]— floHCKOe Biopo HO 



Bopb6t cij BpeflMTenflMM CenbCKO-XoaniiCTBeH. PacTeH'm, 



HOBOMepKacCTj. [Bon Bureau for Control of Pests of Agricultural 

 Plants, NovotcherkassL] Leaflet no. 4, 2 pp., 4 figs. [Received 

 1st January 1920.] 



Great damage is caused to cherries in south Russia by the larvae of 

 the cherry fruit-fly [Rhagoletis cerasi, L.]. The eggs are inserted into 

 the fruit when it begins to ripen and the larvae feed on the flesh. 

 When mature they drop to the ground, which they enter to a depth 

 of about one inch for pupation, the adults emerging the following 

 spring. The chief remedial measure is the destruction of the hiberna- 

 ting larvae by digging over the ground in the autumn. . 



ZVIEREZOMB-ZUBOVSKY (E.). KpaiKJIl 0T4eT"b fltflTeJlbHOCTM 



AoHCKoro Biopo no Bopb6t ci* BpeflMTennMii Ceji.-Xo3. 

 PacTeHJM BT, 1917 r. m OQsop-b BparoBi, CejibCKaro XoanftCTBa 



flOHCKOM OOnaCTM. [Brief Report on the Work of the Don 

 Bureau for the Control of Pests of Agricultural Plants for 1917, 

 and Review of the Pests of Agriculture in the Don Province.] 

 Rosioff, 1918, 36 pp., 10 figs. [Received 1st January 1920.] 



The work of investigation into the hfe-histories of agricultural 

 pests was very hmited during 1917. This was the first year of existence 

 of the Bureau and the equipment required, including microscopes and 

 various laboratory requisites, was obtained with great difficulty. 



A provisional list has been drawn up of all pests found in the Don 

 Province. These include :— the Acarids, Eriopkjes tiliae, Pag., var. 

 liosoma, Nal, on hmes ; Tetranyckus telarius, L., on apple trees ; 

 Tyroglyphus farinae, Koch ; Tyroglyphus sp. in flour ; Eriophyes 

 {Phytoptus) vitis, Land., for which the chief remedial measure is the 

 collection and destruction by fire of all fallen \nne leaves ; Damaeus 

 mdiciphagns, Dement., causing the abandonment of viticulture in 

 some districts ; Hoploderma elipsoidalis, Dement., on vines. 



The Orthoptera include •.— Locusta (Pachyfylus) migratoria, L. ; 

 I. (P.) danica, L. ; CaUiptdmus italicus, L. ; Oedaleus mgrofasciatns, 

 DeG. ; Oecanthvs pellucens, Scop. ; Gryllotalpa gryllotalpa, L. 



Thysanoptera:— ^a^?o«Arij95 tritici, Kurdj., in early June on rye, 

 wheat and also on late wheat. 



Rhynchota -.—EurygaMer integriceps, Put., on wheat, this bug being 

 parasitised by Telenomus semistriatns, Nees, and T. rufiventris. 



