262 



the usual remedial measures are advocated [R.A.E., vi, A, 367, 385, etc.] ; 

 a spray that proved effective consists of 10 lb. tobacco extract, | gal. 

 of petroleum, J gal. demilysol and 100 gals, of water. During the 

 infestation in 1915 isolated larvae were found as late as October, sug- 

 gesting that two generations occur during the year. A proportion of 

 the larvae apparently pupate in the summer, giving rise to adults in 

 July and August, whilst others hibernate and thus produce only one 

 generation during the year. 



FuLMEK (L.). Die Larchenminiermotte. [The Larch-mining Moth.] 

 — Separate from Natur, Leipzig, 15th July 1917, no. 20, 2 pp., 

 2 figs. [Keceived 27th April 1920.] 



Coleophora laricella, Hb., is one of the most serious pests of the 

 larch in Austria and Germany. Oviposition occurs at the end of May 

 and the larvae on hatching begin to bore at once in the needles, though 

 the damage is not visible until about the middle of September. The 

 hoUowed-out tip of the needle is broken off and used as a case in 

 which the larva hibernates. The following spring the buds and new 

 needles are attacked. Pupation occurs from the end of April to the 

 beginning of May in the case attached to one of the needles. The 

 remedial measures advocated are those already recommended by other 

 authors [R.A.E. A, iii, 191]. 



FuLMEK (L.). Die Feldmassige Bekampfung der Blattlause. [Field 

 Control of Aphids.] — Mitt, landwl.-bakteriol. u. Pflanzenschutz- 

 station, Vienna [n.d.]. (Separate from Wiener landw. Zeitung, 

 no. 68, 24th August 1918), 12 pp., 15 figs. 



This paper deals with Aphids in general. Their natural enemies 

 and measures for dealing with them are discusssed. 



Wahl (R.). Bekampfung der Spinnmilben. [Control of Tetranychus 

 spp.] — Mitt, landw. -bakferiol. u. Pjlanzenschutzstation, Vienna 

 [n.d.], 12 pp., 1 fig. (Separate from Wiener landw. Zeitung, 

 no. 51, 24th June 1916.) [Received 27th April 1920.] 



The measures advocated for red spider [Tetranychus] include the 

 destruction of the winter eggs and hibernating individuals by means 

 of clean cultivation and the application of quassia, nicotine and 

 lime-sulphur sprays. The formulae given include several for the 

 preparation of the latter, which is considered to be the most 

 efficacious. 



Wahl (B.) Die Bekampfung der Graseule {Charaeas graminis, L.) 

 [The Control of the Antler Moth.] — Mitt, kmdw.-bakteriol. u Pjlanz- 

 enschutzstation, Vienna [n.d.], 3 pp., 1 fig. (Separate from Wiener 

 landw. Zeitung, no. 47, 12th June 1915.) [Received 27th April 

 1920.] 



Charaeas graminis, L., is very destructive to grassland in the 

 north of Europe, and has also been noticed in Bukovina. The 

 different stages are described. About 200 eggs are laid by each 

 female round the grass roots. The larvae emerge after about three 



