343 



ScHREiBER (A. F.). 5opb6a c"b nMHMHHaMM wiaiiCKiixi. xpymeti Ha 



KanyCTHblX"b rpflflax"b. [The control of larvae of Melokmtha in 

 cabbage beds.]^« BtcTHMK-b CaAOBOACTBa, FlnonoBOflCTBa M Oro- 

 p0flHM4eCTBa.» [Messenger of Gardening, Fruitgrowing and 

 Market-Gardening], 1914, nos. 8-9. pp. 665-666. 



The author reports on the testing of two remedies against the larvae 

 of Melolontha : First, of the remedy of Mr. Dengink — viz., 1 lb. of 

 soap, 3 lb. of tar and 10 lb. of soot in 27 gallons of water ; and secondly, 

 of the remedy recommended by K. N. Rossikov — ^viz., 2 lb. of Paris 

 green in 108 gallons of water. The tests took place near Irkutsk on 

 cabbage beds swarming with Melolontha larvae. With the first Uquid. 

 the cabbages were watered every alternate day, but the larvae suffered, 

 no ill effects. When the beds were watered with Paris green the results 

 were excellent, the majority of the larvae being destroyed. This 

 remedy can, however, only be successfully apphed if the larvae are 

 not deeper than about 4 inches beneath the surface of the soil. Another 

 recently described remedy against these larvae, which consists of 

 watering the infested soil with a solution of carbolineum (three table- 

 spoons in 27 gallons of water), was not tested. 



ScHREiNER (J. F.). Ktj BORpocy BpeflMienflXTj TaSana. [On the 

 question of pests of tobacco.] — « CeJIbCKJH Xo3flMHTj.» [The 

 Rural Landowner], 1914, no. 38, pp. 2142-2144. 



The following pests of tobacco are reported : Gryllotalpa, against 

 which the usual remedies are recommended, and Euxoa (Agrotis) obesa, 

 the caterpillars of which are destroyed by means of poisoned paste. 



Cholodkovsky (N. a.). [Observations on Chermes spp. in Switzerland.] 

 — ^« PyccKoe 3HTOMonorM4ecKoe 06o3ptHie.» [Revue Russe 

 d'Entomologie], Fetrograd, xiv, no. 2-3, 14th October 1914, pp. 

 Ixxix-lxxxiii. 



At a meeting of the Russian Entomological Society held on 6th 

 April 1914, a communication was read by Professor N. A. Cholodkovsky 

 on his observations on Chermes in Switzerland. At Meiringen, he 

 observed C. viridis, Ratz., which lives on firs, migrating to larch trees 

 {Larix europaea) and notes that the opening of the galls of this species 

 takes place there a month earlier than in northern Russia, where it 

 occurs at the end of July. The existence of an early green brood 

 laying dark green eggs, and a late, yellow one, laying yellowish green 

 eggs, turning gradually dark green, is confirmed. In ]\leiringen, the 

 migration of the winged forms of C. abietis, Kalt., on to larch trees 

 from firs was observed, whereas later on, in August, in Engelberg, 

 owing to the absence of larches individuals emerging from the opening 

 galls oviposited on the same firs, frequently in close proximity to the 

 galls from which they had just issued. Observations on C. sibiricus, 

 Choi., in St. Moritz, show that the galls of this species are formed, 

 not by the egg-laying stem-mothers, but by their descendants 

 The woods at Schoenewerd were found infested with the silver fir 

 Chermes. This species causes first the young shoots, and then the ends 

 of the branches and the tops to wdther, young trees being entirely 



