343 



and the collection of the larvae in the field. Two generations a year 

 occur in Czecho-Slovakia. Hibernation takes place in the larval stage 

 in the ground, the first adults appearing about the middle of May. 



Rambousek (F.). zavijeci repov6m. [Loxostege sticticalis, L.] — 

 Ochrana Rostlin, Prague, i, no. 5-6, December 1921, pp. 8-9. 

 [Received 3rd April 1922.] 



Microtachina erucarum, Rond., is recorded as a parasite of Loxostege 

 sticticalis, L., as many as 30 per cent, of the larvae being attacked 

 in some districts of Czecho-Slovakia. Other enemies are the parasite, 

 Phora nifipes, Mg., and Microklossia prima, which causes an epidemic 

 disease in the caterpillars [R.A.E., A, iv, 303]. In view of these 

 parasites and of a disease attacking the adults, no great damage is 

 expected from the overwintering brood, but there is always a danger 

 of fresh infestations by the winged adults migrating from Galicia 

 and the Ukraine. 



Antonin (S.). Kotazce o ochrane kultur zemedelskych proti zaplavam 

 skodliv^ho hmyzu. [The Protection of Economic Plants against 

 Insect Pests.] — Ochrana Rostlin, Prague, ii, no. 1, March 1922, 

 pp. 4-7. 



The distribution of, and damage caused by various insect pests such 

 as Liparis {Psilura) monacha, Loxostege {Phlyctaenodes) sticticalis, 

 Eriosoma {Schizoneura) lanigerum, Eiixoa {Agrotis) segetum and 

 Etdecanium {Lecanium) corni in Czecho-Slovakia are described, and 

 the need for systematic remedial measures is indicated. The 

 importance of birds to agriculture is also discussed. 



Vielwerth(V.). Pandravy. [Melolonthamelolontha.] — Ochrana Rostlin, 

 Prague, ii, no. 1, March 1922, pp. 9-11. 



Melolontha melolontha {vulgaris) is widely distributed in Czecho- 

 slovakia and causes serious damage in both the larval and adult 

 stages. The food-plants include many grain crops and fruit-trees. 



The life-history of this cockchafer and the injury done by it are 

 described. The remedial measures advocated are the collection of 

 adults and the use of carbon bisulphide against the larvae. Of the 

 latter, 7-8 gm. should be placed in shallow holes in the ground 

 and covered with earth. About six holes are required to the square 

 metre. 



Smolak (J.) . Housenci hnizda bekyne zlatoritn6 na ovocnych stromech. 



[Caterpillar-nests of Nygmia phaeorrhoea on Fruit-trees.] — 

 Ochrana Rostlin, Prague, ii, no. 1, March 1922, pp. 11-12. 



A brief account is given of the life-history of Nygmia phaeorrhoea 

 {Euproctis chrysorrhoea) and the damage caused by it to fruit-trees 

 in Czecho-Slovakia. Remedial measures include the collection and 

 destruction of the nests and spraying the trees at the beginning of 

 August with 1 lb. Paris green, 2ilb. lime and 100 gals, water. 



Ruzn6 zpravy. [Miscellaneous Notes.] — Ochrana Rostlin, Prague, 

 ii, no. 1, March 1922, p. 12. 



Lepidosaphes ulmi {Mytilaspis pomorum) causes damage to many 

 fruit-trees, grape-vines, and currants. The trees should be kept free 



