641 



attacked in tlie laboratory, eggs of Crambus sp., Acontia luduosa, 

 Hb., Gonosjyileia glyjjhica, L., Euxoa segetum, Schiff., Thecla betulae, 

 L., and Phalera bucephala, L. ; one female can apparently infest as 

 many as 28 eggs of E. segetum, two parasites being present in 

 each egg. 



The following experiments on insecticides were carried out :■ — 

 London purple, 10 oz. in 3 gallons of water, caused a death-rate of 

 32 per cent, among Cassida nebulosa on the third day ; while Paris 

 green, 60 oz. of green and 120 oz. of quick lime in 27 gallons of water, 

 resulted in a death-rate of 40 per cent. Phytonal, 60 oz. in 27 gallons 

 of water, produced a death-rate of 38 per cent, of Sitones sp. on peas. 

 Quassia soap, 1 lb. in 11 or 12 gallons of water, proved less effective 

 against Aphis pomi, de Geer, than quassia soap decoction containing 

 3 lb. of quassia shavings and 2 lb. of green soap in 25 gallons of water. 

 A list of insects reported to the Station by various correspondents 

 concludes the report. 



MicHAiLov-DoiNiKov (A.). HactKOMbm, Ha6jiK)AaeMbm bt, BeceHH'm 

 nepiOAl) 1915 rofla. [Insects observed in the spring of 1915.] — 

 « Cafllj, OropoAT* M Eaxna. [Orchard, Market-Garden and Bachza], 

 Astrachan, no. 7, July 1915, pp. 327-333. 



This is a list containing the names of 84 species of insects recorded 

 by the Entomological Station of Astrachan during spring 1915. Great 

 damage was done by Gryllotalpa gryllotalpa, L., Biston hirtarius, CI., 

 Ljjmantria {Ocneria) dispar, L., Pieris brassicae, L., Phytometra (Plusia) 

 gamma, L., PluteUa macuUpennis, Curt, [cruciferarmn, Zell.), Acrolepia 

 assectella, Zell., which greatly damaged seedlingo nions, Talis quercella, 

 Schiff., Phlyctaenodes sticticalis, L., Epicometis (Tropinota) hirta, 

 Poda, Rhynchites auratus, Scop., R. bacchus, L., Trichiocampus 

 (Cludius) viminalis, Fall., and Eriocampoides limacina, L. {Selandria 

 adnmbrata, Klug). 



Shtcherbakov (Th. S.). 3HTOMonorii4ecKifl aaMtiKM o K/ieeept. 

 [Entomological notes on clover.]— « BtCTHMKlj CenbCKaro Xo- 

 3flMCTBa.» [Messenger of Agriculture], Moscoiv, xvi, nos. 23, 

 20th Jmie, and 24, 27th June 1915, pp. 10-14 and 5-8. 



The author discusses the available data as to the injury caused by 

 species of Ajyion and contends that these insects cannot be regarded 

 as very important pests of clover. Dealing with the data obtained 

 from the observations of the Entomological Section of the Shatilov 

 Agricultural Experimental Station and those of A. Sopotzko [see this 

 Review, Ser. A, i, p. 483], he points out that the damage actually 

 caused by the larvae of Apion to clover cannot be estimated on the 

 basis of the percentage of infested inflorescences, but of the flowers 

 actually destroyed iu each of them. The figures obtained at the 

 Station show that, whereas the infestation of heads of Trifolium 

 pratense perenne, which is the most highly infested variety of clover, 

 is about 50 per cent, in case of clover not mown in sprhig, and from 

 5 to 14 per cent, in case of mown clover, the amount of destroyed 

 flowers never exceeded 1 or 2 per cent. The figures supphed by 

 Sopotzko show higher percentages, viz., from 34 to 92 per cent, of 



(C215) B 



