97 



If two persons are not available, one can work the trap, drawing it 

 with outstretched arm, and walking so that his shadow falls on rows 

 already done. The cost of the trap is about 2s. or 2s. 6d. As an 

 adhesive substance for the boards, vaseline was found to melt too 

 readily under the hot sun, but Morlar Hop-wash (pure and undiluted), 

 Wood and Sons' smearing grease, and black currant mite grease were 

 found suitable. It is important to have a material that remains sticky 

 and does not permit the beetles to jump off before they sink into it. 

 The principle of this trap can probably be applied to field use by making 

 a multiple one based on the width of one of the drills. 



OuTHBERT (H. G.). Wasp preying on Sawfly Caterpillars.— Im/i 



Naturalist, Dublin, xxiii, no. 11, November 1914, p. 238. 

 When clearinof gooseberry bushes of the larvae of Pteronus ribesii, 



mi • 1 



Scop., queen wasps were found preying on them. These were mamly 

 those of Vesparufa, var. austriaca, V . norvegica, and V . germanica ; the 

 queens were later supplemented by workers of F. norvegica and V. rvfa. 



Berthoumieu (V.). Trois nouveaux Ichneumoniens du Nord de la 



France. [Three new Ichneumons from the North of France.] 



^UEchange. Revue Linneenne, Moulins, xxx, no. 359, November 



1914, p. 75. 



The following new species of Ichneumons are recorded : Ichneumon 



product us and Platylabus ambiguus, from the Ardennes ; and /. pigeoti, 



from Rethel. 



French (C. Junr.). The Thrips Pest.— J/. Dept. Agric. Victoria, 

 Melbourne, xii, pt. 11, November 1914, p. 688. 

 Benzol emulsion is recommended against thrips, and also the 

 following preparation of nicotine : — Steep 1 lb. tobacco in 1 gal. hot 

 water, leave to soak for 24 hours; boil 1 lb. soap in 1 gal. water 

 until the soap is dissolved; strain the tobacco water into the soap 

 water, stir well and make up to 5 or 6 gals. Spraying with coal 

 tar water or a weak kerosene emulsion is a good deterrent ; for coal 

 tar water, boil 1 lb. coal tar in 2 gals, water, and while hot, add from 

 50-100 gals, water. 



Pescott (E. E.). The Orchard.--J/. Dept. Agric. Victoria, 

 Melbourne, xii, pt. 11, November 1914, p. 701. 



Advice as to spraying in the month of November is given : Strong 

 tobacco solution for peach aphis [Myzns] and for pear slug 

 [Eriocampoides Umacina] should be used, but lead arsenate is the better 

 spray for the latter insect, though it must not be used if the fruit is 

 nearly ripe ; hellebore is also recommended. Lead arsenate is the 

 best remedy for codling moth [Cydia pomonella]. The first spraying 

 should be given at the time of the falling of the petals, the second a 

 fortnight later, the others at the growers' discretion ; four, and per- 

 haps only three, sprayings will generally be sufficient ; if the spraying 

 is thorough, no bandaging need be done. Nicotine solution or pine 

 spray may be used to check woolly aphis [Schizoneura lanigera.] 



