599 



the work is here described in detail for use during any future outbreak 

 of this butterfly. Hand-collection of all the winter nests of young 

 larvae on the branches and their destruction was found to be the 

 sole effective measure. If the pest appears in threatening numbers 

 the work must be organised and supervised b}^ the authorities. The 

 campaign against a pest is half won if growers are really well informed 

 regarding its habits and the measures needed against it. 



In the general section of this paper it is pointed out that the Pala- 

 tinate includes the warmest area in German}^ and that this results 

 in its pre-eminence as an orchard and vineyard region and in an 

 abundance of permanent pests, including Clysia [Conchylis) ambiguella, 

 Hb., Polychrosis botrana, Schiff., Nygmia phaeorrhoea, Don. {EuprocUs 

 chrysorrhoea, L.), Malacosoma neusiria, L., Lyniantria dispar, L., 

 Cheimatohia brumata, L., Cydia {Carpocapsa) pomonella, L., Scolj'tid 

 beetles, and Agrilus sinuatus, Oliv. 



Faes (H.) & Staehelin (M.). Les Traitements centre la Cochylis 

 (Ver de la Vigne) en 1921. — Progres agric. & vitic, MontpdUcr, 

 Ixxviii, nos. 40 & 41, 1st & 8th October 1922, pp. 326-330 & 

 350-353, 2 graphs, 2 tables. 



This information on measures against the vine moth [Clysia ambigu- 

 ella, Hb.] has already been noticed elsewhere [R.A.E., A, x, 320]. 



DoBRZHANSKi (F.). K no3HaHMH) WGHCKoro nonoBoro annapaia 



6o}KbMX KOpOBOK (CoccinelMae). [Contributions to the Know- 

 ledge of the Female Genital Apparatus of Coccinellids.] — Reprint 

 from KweBCKMe yneHbie MSBeCTMH [KievSci. Inform.], Kiev,i, 1921, 

 3 pp. [Received 9th October 1922.] 



The contents of this paper are indicated by its title. 



Pettit (R. H.). The Hessian Fly. — -Michigan Agric. Expt. Sta., 

 East Lansing, Circ. 49, July 1922, 8 pp., 1 fig. [Received 9th 

 October 1922.] 



The life-history of and injury to wheat by the Hessian fly [Mayetiola 

 destructor. Say] are briefly reviewed, and a calendar is given setting out 

 the fly-free dates for sowing wheat in the different counties of 

 Michigan. 



KoTiLA (J. E.). Spraying for Hopperburn. — Michigan Agric. Expt. 

 Sta., East Lansing, Circ. 48, July 1922, 4 pp., 2 figs. 



A brief account is given of the importance of hopperburn of potatoes 

 caused by the potato leaf -hopper [Empoasca niali, Le B.], the losses 

 in Michigan amounting in many cases to 25 per cent, of the crop. 

 Spraying with Bordeaux mixture [R.A.E., A, x, 217] is recommended,, 

 and its preparation for large acreages is described. 



Headlee (T. J.), Cook (M. T.) & Farley (A. J.). Spray Calendars.— 

 New Jersey Agric. Expt. Sta., Neiv Brunswick, Circs. 132-136, 

 1st February 1922, 4, 4, 4, 3, 3 pp., 3, 3, 2, 2, 1 figs. [Received 

 10th October 1922.] 



These revised spray calendars suggest the best time and materials 

 for spraying apples and quinces, peaches, pears, cherries and grapes, 

 under New Jersey conditions. 



