296 



SopoTZKo (A. A.). ripoeKTij nporpaMMbi paOoTii npaKTMHaHia Ha 

 onbiTHOMii no/it no c6opy MaTepiana no KneeepHbiM-b epeAMTe- 

 JlflM'b. [An outline programme of work for assistants engaged in 

 collecting material on pests of clover in the experimental fields.] 

 — «TpyAbi coBtmaHifl no BpeAMiennM-b H/ieepa cpeflHe-pyccKaro 



pai0Ha.» [Proceedings on the Conference on pests of clover in 

 Central Russia.] Published by the Entomological Station of the 

 Zemstvo of the govt, of Tula, Tula, 1916, pp. 206-211. 



In order that the assistants in charge of the above-mentioned obser- 

 vation-points should as far as possible work on identical Hues, the 

 observance of the following rules is suggested : — 1. Sweeping clover 

 crops with entomological nets must be done everywhere the same 

 number of times and at the same hours each day ; the temperature 

 of the air must be taken before and after the sweeping and the data 

 obtained must be classified in a similar way. 2. In taking samples for 

 analysis, the field should be crossed on a diagonal, sample stems 

 being taken alternately from right and left, at given intervals. 



3. Analysis of the clover should include a description of the growth 

 of the plants, the presence of fungus diseases, insect pests, etc. 



4. Collection of weeds. 5. Catching of Noctuid moths in molasses 

 and inspecting the traps each morning. 6. Catching honey bees and 

 humble bees. 



Adrianov (A. P.). HiejiaienbHbm pa6oTbi no MsyHeHiro npoBOJioM- 

 HblXTj Hepeeii H Mtpi> 6opb6bl Cb HMMM. [Desirable work on the 

 study of wire-worms and their control] — ^«TpyAbI COB'tLUaHifl 

 no BpeAMTenflMij Knesepa cpeAHe-pyccKaro paioHa.» [Proceedings 

 of the Conference on pests of clover in Central Eussia.] Published 

 by the Entomological Station of the Zemstvo of the govt, of 

 Tula, Tula, 1916, pp. 192-205. 



This paper is a revision of the work done on Elaterid larvae in Russia 

 [see also this Review, A, i, pp. 216, 485, ii, pp. 265, 372, 466, iii, p. 309 

 and iv, p. 162]. Biological questions which are not yet completely 

 cleared up, include the food of the imago, the exact time of the pairing 

 and oviposition, the interval between these two processes, the number 

 of eggs laid at a time and in the aggregate, the duration of the egg- 

 stage, the food of the young larvae, the number of moults, the duration 

 of the larval stage, the identification of the larvae. As regards 

 remedies, roUing cannot be expected to result in the destruction of the 

 larvae, which are able to live in very hard and dry soil and to withstand 

 starvation for a considerable time, but it is an open question whether 

 this remedy does not create conditions in the soil rendering it impossible 

 for the larvae to attack plants. Carbon bisulphide injections may 

 prove too expensive, but further experiments are required in this 

 respect, as well as in the use of poisoned baits, which involves much 

 labour. Mineral manures have not proved effective up to the present. 

 During the discussion on this paper, E. M. Vassihev stated that 

 Elaterid larvae begin to do damage earher than is usually supposed 

 and those of Agriotes Uneatus attack the swollen seeds of maize in a, 

 very young stage. The oviposition period extends from early spring 

 till June or July. In the opinion of A. Sopotzko the egg is the stage 

 which is most easy to attack. E. M. Vassihev stated that the egg^ 



