346 



this scorched the leaves to such an extent that its use is not advocated. 

 This mixture is most useful for Aphis pomi, DeG., for which it may- 

 be used at 1| to 2 per cent, strength, also for Pterochloroides perswae, 

 Choi, as a 3| per cent, solution. This strength does not damage 

 peaches, as these Aphids congregate on the bark. 



Kerosene-lime emulsion proved the most effective for E lanigerum, 

 used at the strength of 13|-18 lb. of kerosene to 9 12 oz. of 

 unslaked lime and 27 gals, of water. A weaker emulsion is sufficient to 

 kill Hyalopterus arundinis. Crude oil is not recommended, as although 

 it will kill the Aphids it has too many other disadvantages. 



Tables are given of the various experiments made. 



UvABov (B. p.). KaKi» 6opOTbCfl c-b kpobahom TJieti. [Tie Control of 

 Eriosomu lanigerum, Hausm.] — «06meflOCTynHblll COOfimeHifl 

 BpeflMTejiflXTj M 6ont3HflX"b HyjibTypHbixTi pacTeHiM.» Popular 

 Information of Pests and Diseases of Cvltivated Plants], Tifl.is, no. 

 6, December 1917, 7 pp., 4 figs. [Received 9th June 1919.] 



The woolly aphis, Eriosoma lanigerum, Hausm., is described and the 

 usual remedial measures are advocated. 



UvAROv (B. p.). Maiepianbi wh nosHaHiio npniiOKpbmbix-b KasKaaa 

 M COnpefltnbHWXTj CipaHlj. [Contributions to the Knowledge 

 of Orthoptera of the Caucasus and adjoining Regions.] 

 I. ripflMOKpbinbm, coOpaHHbm n. B. HecTepoBbiM-b bo epemfl 

 nyTeiuecTBifl sflonb nepcHACKO-rypeuKOM rpaHMUbi. [1. Orthop- 

 tera collected l3y P. V. Nesterov on his Journey along the 

 Perso-Turkish frontier.] — Separate, dated August 1916, from 

 «M3BtCTifl KaBKaaOKaro My3efl.» [Bull of the Caucasian 

 Museum], Tifiis, x^ 14 pp., 9 figs. [Received 9th June 1919.] 



A list is given of Orthoptera of the Caucasus, including Kurdia 

 nesterovi, gen. et sp. n., Drymadusa curvicerch, sp. n., Olynthoscelis 

 zebra, sp. n., and 0. h<rda, sp. n all from Ivurdistan, which are 

 described in Latin. 



UvABov(B. p.). Marepianbi kij nosHaHiio npfjMOKpbmbix-b KasaKasa 



M COnpeAtnbHblXTj CTpaHl>. [Contributions to the Knowledge of 

 Orthoptera of the Caucasus and adjoining Regions.] 1 1 . ^iarHOSbl 



HOBbix-b BHAOB-b M pacb MSii KOJineKi^iii KasKascKaro Mysen. 



[2. Determination of new Species and Subspecies in the Collection of 

 the Caucasus Museum.] — Separate from ttHsBtciifl KaBKasCKaro 

 IVIy3efl.» [Bull, of the Caucasian Museum], xi, 18 pp., 15 figs. 

 [Received 9th June 1919.] 



The following new species and subspecies of Orthoptera are de .cribed 

 in Latin : Arcyptera flavicosta transcaucasica, Celes variabilis carbonaria, 

 Podisma lezgina, Isophya poltoratskii, Paradrymadusa pastuchovi and 

 P. expugnata from Transcaucasia ; P. bocquilloni, P. persa and Platy- 

 deis persica from Persia ; P. iljinskii from Transcaucasia ; P. daghe- 

 stanica, from Daghestan ; P. capitata from Persia ; and Olynthoscelis 

 kerJceta from Circassia. 



