294 



Tijmla fiavolineata, Mg., attacked clover in 1911 and 1912 in several 

 localities. Adults and larvae of Agriotes lineatus, li., A. sputator, L., 

 and A. obscurus, L., were constantly found in the soil of clover fields. 

 It has not yet been ascertained how far they are injurious to this crop. 



Shtcherbakov (Th. S.)- riepcneKTMBbi MsyHeHin Kneeepa ct. tohkm 



aptHifl OnblTHO-SHTOMOnorMMeCKOM. [The possible results of the 

 studies of clover from an experimental-entomological point of 

 view.]— «TpyAbi coBtiMaHifl no BpeflMTenflMii K/ieeepa cpeflHe- 

 pycCKaro paiOHa.» [Proceedings of the Conference on pests of 

 clover in Central Russia.] Pubhshed by the Entomological Station 

 of the Zemstvo of the govt, of Tula, Tula, 1916, pp. 154-181. 

 [See this Review, ser. A, iv, p. 142.] 

 The above two papers provoked a great deal of discussion. The views 

 expressed were finally embodied in the resolution adopted by the 

 conference, which states that amongst the factors responsible for the 

 dechne in the cultivation of clover, a prominent place must be assigned 

 to insect and fungus pests, and that the necessary further researches 

 must proceed by way of the biological-ecological and agricultural- 

 statistical methods. The first of these is defined, as consisting not 

 only of the study of the life-history of the pests in connection with 

 various external influences, but also of the study of the physiological 

 processes of the insect organism, particularly those connected with 

 stages in its Hfe-history against which the various methods of control 

 are directed. The second method must be based on comparative data 

 for several years and be applied according to the recognised rules of 

 the science of agricultural statistics. Special attention should be 

 paid to those varieties of clover which appear to be insect- and fungus- 

 proof. E. M. Vassiliev emphasised the necessity of paying more 

 attention to the insects which attack the roots of clover, amongst 

 which he instanced the larvae of Otiorrhynchus ligustici, L. 



GoRiAiNov (A. A.). epeflMTejiflXTj Kneeepa btj PnaaHCKoii ry6epHiM. 



[On pests of clover in the govt, of Riazan.]- — « TpyAbI COB"b- 

 LUaHifl no BpsAMTenflM'b KneBepa cpeAHe-pyccKaro paioHa.» 



[Proceedings of the Conference on pests of clover in Central Russia.] 



Pubhshed by the Entomological Station of the Zemstvo of the 



govt, of Tula, Tula, 1916, pp. 146-150. 



Pests of clover in Riazan include :■ — Apion apricans and A. aestivum 



(trifolii), which are very prevalent. In many cases Chalcids were 



reared from the clover heads. Bruchophagus gibbus, Sitones sp,, 



Scotogramma (Mamestra) trifolii, and Polia suasa {M. dissimilis) were 



also present. 



MizERovA (F. v.). BpeflMTenn Kneeepa btj OpnoBCKOM rySepHiM B"b 



1913-14 r.r. [Pests of clover in the govt, of Orel according to 

 observations in 1913-14.]— « TpyAbI COBtmaHifl no BpeAMTeJlflin» 

 KJieeepa cpeAHe-pycCKaro pai0Ha.)> [Proceedings of the Conference 

 on pests of clover in Central Russia.] Published by the Entomo- 

 logical Station of the Zemstvo of the govt, of Tula, Tula, 1916, 

 pp. 151-153. 

 The following pests of clover are given in this paper :— Apion 

 aestivum, Germ,, A. apricans, Herbst, A. flavipes, Vajk., Bruchophagus 



