44 



being appointed Director. In addition to the work of the Bureau, 

 the Agronomic Branch of the Zemstvo deals with the estab- 

 lishment of hiring stations for sprayers and insecticides, the various 

 district Zemstvos organise demonstrations against insect pests in their 

 respective districts, and district consulting advisers supervise the control 

 of insects in orchards and hop gardens. The scientific part of the 

 work is left to the Entomological Bureau, which conducts general 

 investigations, the collection of data on insect pests, experiments on 

 the application of various remedies to the local conditions, the popu- 

 larisation of entomological knowledge, and the general supervision 

 of all work undertaken against pests. The estimates of the Bureau 

 for 1914 amount to about £400, half of which is covered by a grant 

 from the Department of Agriculture, the other half being borne by 

 the Zemstvo. 



UvARov (B. p.). OiHeTTj fl-feflienbHOCTM CiaBponojibCKaro 3htomo- 



\ JlorMMeCKaro Biopo aa 1913 rOfl"b. [Report of the Entomological 



/— O Bureau of Stavropol for 1913.] — Published by the Department of 



Agriculture of the Central Board of Land Administration and 



Agriculture, Petrograd, 1914, 86 pp., 1 plan and 1 sketch map. 



The work of the Bureau during the year under report is reviewed, 

 the most important section consisting in the supervision and direction 

 of the campaign against locusts. Two new insecticides were tried 

 against locusts, one of these "Locusticide," made by an Anglo-American 

 firm, proving very effective and handy, while the second, " Phy- 

 tonal " of the Schweinfurt chemical factory, did not give satisfactory 

 results. Trials of two new sprayers showed the excellent qualities 

 of the " Holder " sprayer. A list is given of injurious insects recorded 

 in the government. 



The only Myriapod mentioned, Blanjulus gitttulatus, was found in a 

 maize field injuring the grain, but as it was in company with Elaterid 

 larvae it is doubtful how far it was responsible for the primary injuries. 

 The Arachnids, Tetranychus sp., Eriophyes vitis, Land., and E. pyri, 

 Pagst., were observed in various localities, the first-named having 

 in two cases injured the foliage of plum trees. Orthoptera, with few 

 exceptions, were nowhere important ; Dociostaurus (Stauronotus) 

 maroccanus, Thunb., was only found sporadically and did practically 

 no damage ; in still less numbers were Arcyptera flavicosta, Celes 

 variabilis, Oedipoda coerulans and in one case Dociostaurus {Stauronotus) 

 kraussi, Ingen. Far more danger was threatened by Locusta migra- 

 toria, L., which, coming from the adjoining province of Terek, infested 

 with its egg-clusters nearly 60,000 acres, in the autumn of 1912, but 

 thanks to a timely spraying with Paris green, and sodium arsenite with 

 zinc oxide, this pest was nearly everywhere totally destroyed. The 

 cost of the campaign amounted to £6,300. Only some 135 acres were 

 noticed to be infested with eggs in the autumn of 1913, to which, how- 

 ever, must be added 11,600 acres on which a swarm coming from the 

 neighbouring province succeeded in ovipositing. Egg-clusters of 

 Oedaleus nigrofasciatus, C. variabilis, Tmethis muricatus and 0. coeru- 

 lans were also observed, but no precautionary measures were neces- 

 sary. Vineyards in one locality were damaged by Oecanthus pellucens. 

 Scop., and Gryllotalpa gryllotalpa, L., was reported from many places 



