406 ENTOMOLOGICAL NEWS. [March, 



vations were made upon species of Tabanus, Chlorops and Hfematopota. 

 Species of the first two named genera have the habit of darting down 

 upon the surface of pools to take water, and advantage was taken of this 

 fact in devising a remedy for their destruction. Pools were covered with 

 films of oil and the insects were destroyed by corning in contact with this 

 substance. 



Injury caused to hazel trees in Crimea by a scale insect (Lecahium 

 corni, Bouche", or L. robiniantin, Doug), S. Mokrzhetzki (Selsk. Khoz. i 

 Lyesov., 1899, No. 2, pp. 413-420, figs. 4). 



General survey of the life history of injurious insects and means of 

 combating them, I. Shevuirev (Selsk. Khoz. i Lyesov., 1899, No - 6 > PP- 

 587-628). Economic notes on a large number of noxious insects. 



Combating the enemies of agriculture, V. Morachevski (Selsk. Khoz. i 

 Lyesov., 1899, No. 8, pp. 193-225). Notes on Orthoptera, especially 

 Pachytylus migratorius, and a detailed discussion of the means adopted 

 in different governments of Russia for fighting them. 



Combating the enemies of agriculture, V. Morachevski (Selsk. Khoz. i 

 Lyesov., 1899, No. 9, pp. 445-454). Notes on species of Agrotis, Anisoplia 

 and the Hessian fly. 



Materials for the study of the geographical distribution of bark beetles 

 in Russia, I. Shevuirev (Ezhegod. Lyesn. Inst., St. Petersburg, 2 (1888), 



pp. 173-183. 



Pissodes strobili, N. Zhilyakov (Ezhegod. Lyesn. Inst., St. Petersburg, 

 3 (1888), pp. 113, 114, figs. 2). 



The restraing influence of the weather of 1888 upon plants and insects, 

 A. A. Silantev (Ezhegod. Lyesn. Inst., St. Petersburg, 3 (1888), pp. 115- 

 iiS). Notes on species of Melo/ontha, Tomicus, Lophyrus, etc. 



Entomological notes, A. A. Silantev (Ezhegod. Lyesn. Inst., St. Peters- 

 burg, 3 (1888), pp. 119-121). Notes on Cryphalus tilice, Oicnncs pini, 

 Lymexylon dermesfoides, etc. 



The galleries of bark beetles, N. A. Kholodkovski (Ezhegod. Lyesn. 

 Inst., St. Petersburg, 3 (1888), pp. 181-197, figs. 13). Notes on the habits 

 and burrows of a large number of spceies of Scolytidae. 



The biology of bark beetles, A. A. Silantev (Ezhegod. Lyesn. Inst., 

 St. Petersburg, 4 (1891), pp. 223-231, figs. 2). Notes on species of Tomi- 

 cus, Myelophilus, Hylastes, etc. 



Biology and classification of the genus Chermes, N. A. Kholodkovski 

 (Ezhegod. Lyesn. Inst. St. Petersburg, 4 (1891), pp. 255-290, figs. 17).- 

 A detailed account of a large number of species of this genus. 



This brief list of articles may be of service to economic entomologists 

 in America if in no other way than by calling attention to the existence of 

 articles of considerable size upon definite entomological subjects which 

 affect us in this country. Many of these articles are abstracted by the 

 writer at some length for the Experiment Station Record. It is hoped, 

 however, that the brief notes added to most of the titles will serve to 

 indicate the general trend of each article. 



