291 



KoMAREK (J.). Tortrix viridana. — Ochrana Rostlin, Prague, i, no. 3, 

 July 1921, p. 8. [Received 14th March 1922.] 



T or irix viridana, L., is recorded as injuring oaks {Quercus peduncnlata) 

 in various parts of Bohemia. Hibernation apparently occurs in the 

 egg-stage, the larvae hatching about the beginning of May. They 

 pupate towards the end of May and beginning of June. The adults 

 appear from the middle of June to July and oviposit on the buds 

 of the young shoots. Beech, lime and other trees may also be attacked. 

 There is only one generation a year. Birds, especially tits, are the 

 chief natural enemies of this moth. 



ViELWERTH (V.). Ohrozenie zeleneho krmu msicami. [Vegetable 

 and Forage Crops threatened by Aphids.] — Ochrana Rostlin, 

 Prague, i, no. 3, July 1921 , pp. 9-10. [Received 14th March 1922.] 



Acyrthosiphon pi si {Siphonophora ulmariae) is recorded as injurious 

 in several districts in Czecho-Slovakia. The food-plants include 

 clover, lucerne and peas, the Aphids occurring on the lower surface 

 of the leaves and on the stems. The damage caused often amounts 

 to 30 per cent, or more. This pest is apparently spreading rapidly, 

 as the application of insecticides is practically impossible owing to 

 scarcity and high cost of materials. 



Nov.4k (S.). Rozsireni bekyne sosnove (mnisky) na ovocnych stromech. 



[The Spread of the Nun Moth on Fruit Trees.] — Ochrana Rostlin, 

 Prague, i, no. 3, July 1921, p. 10. [Received 14th March 1922.] 



Liparis (Psihtra) monacha is apparently spreading in Czecho- 

 slovakia and causing serious damage to fruit trees. In some cases 

 apples and pears have been completely defoliated. Even the pedicels 

 of the fruit have been attacked, causing it to drop. Oak, beech and 

 alder are also infested. The measures adopted are banding and the 

 collection of the larvae in sheets spread under the trees. 



SoucEK (B.). Mrchozrouti na repe. [Silpha atrata on Sugar-beet.] 

 — Ochrana Rostlin, Prague, i, no. 3, July 1921, p. 11. [Received 

 14th March 1922.] 



Silpha atrata has proved very destructive to sugar-beet in many 

 parts of Moravia. The eggs are laid singly in the ground, five to ten 

 being laid by each individual. The larvae appear in from eight to 

 twelve days and are mature in three or four weeks. Pupation lasts ten 

 to twenty days. The larvae are voracious feeders ; other food-plants 

 are lucerne, vetch, red beet and potatoes. Remedial measures 

 include artificial manuring, clean cultivation, and spraying with 

 arsenicals, etc. The most effective method, however, is to turn poultry 

 into the field. 



Takahashi (R.). The Japanese Aphididae I. — Taihoku, Formosa. 

 Published by the Author, 1921. 



This paper deals with nine species of Aphids, including a new genus 

 and three new species, and some notes on their life-histories are given. 



Neochroniaphis, gen. n., allied to Chromaphis, and distinguished by 

 the anal plate being only slightly notched, not bifurcated, and by the 

 females, whether parthenogenetic or oviparous, bearing a pair of large 



