154 



differently described by various authors (N. Sokoiov, A. Lebedev, 

 J. Schreiner and N. Troitzky), but the observations of the author 

 in 1915, extending over some 600 ovipositions into cherries and some 

 50 into apples, confirm the correctness of the views expressed by 

 the last two as to the formation of the channel round the cylinder 

 in the fruit containing the egg [see this Review, Ser. A, i, p. 439]. 

 Less than 1 per cent, of the ovipositions examined had no such 

 charmel, while 10 per cent, showed an unfinished one and 89 per 

 cent, possessed a normal, complete one. In wild cherries this channel 

 is larger than in cultivated ones, its diameter reaching 4 mm. and 

 its depth 2 mm, and in apples it is larger still, having a diameter of 

 6 mm. and a depth of 4-5 mm. It has further been confirmed that, 

 as stated by N. Troitzky, the hole in the cylinder is filled with the 

 excreta of the females and not by fragments of the fruit. 



Shreiber (A. F.). HaMJiymuie MeiOflU 6opb6bi c"b seMnnHbiMM 6noiiJ- 



KaMM. [The best Remedies for the Control of Phyllotreta.] — ■ 

 ttBtcTHMKii CaAOBOflCTBa, ri/ioAOBOACTBa H OropoAHHHecTBa.» 



[Messenger of Gardening, Fruit-Growing and Market-Gardening], 

 Peiro^rrm^, Ivii, no. 7-8, July- August 1916, pp. 429-431. [Received 

 15th January 1917.] 



Phyllotreta nndulata, Kut., and P. vittata, F., do a great amount of 

 damage every year to cabbages in the government of Irkutsk, Siberia ; 

 in 1915 caulifiowers were specially attacked. Many of the numerous 

 remedies suggested against these beetles, such as spraying with Paris 

 green and powdering with ashes, lime and sawdust, have proved 

 ineffective. Powdering with white or red, but not yellow, sand has 

 proved to be the best. Various theories have been advanced to 

 explain the effectiveness of sand ; the author believes that it is 

 connected with the mechanical effect of the sharp quartz grains 

 getting underneath the elytra of the beetles and damaging the wings. 

 Only fine and dry sand should be used and the beds must be covered 

 with a layer not less than 5 inches thick. The planting of 

 tomatoes near beds of cabbages, radishes, etc., is also recommended, 

 as the smell of these plants has a deterrent effect. 



Sacharov (N.). HtcKOJibKO cnoBTj A"feflTenbHOCTM npoKaHTHbix-b 

 nyHKTOB-b no 6opb6t cb BpeAHTennMM caAOBOACTBa. [Some 

 Remarks on the Work of the Apparatus-Hiring Depots for the 

 Control of Pests of Horticulture.] — ^ « SeMCKan XpOHMKa AcTpa- 

 xaHCKOil ry6epHil1.» [The Chronicles of the Zemstvo of the Govt, 

 of Astrachan], Astrachan, i, no. 1, 1916, pp. 34-37. 



The author describes the work of the apparatus-hiring depots 

 established by the Entomological Stations in various parts of 

 Astrachan during the years 1914-1916. In 1914 only one depot was 

 in existence, this number having been increased to three in 1915 

 and to 11 in 1916 ; in 1917 three additional ones are proposed. The 

 depots also sell various insecticides and fungicides. In 1916 over 

 500 acres of orchards and vineyards were spraved through the medium 

 of these depots. 



