345 



Tischeria complanella, Hb., multiplied in 1917 to such an extent as to 

 cause a general infestation of oak trees. It also attacks chestnuts. 

 There are 3 generations, the caterpillars of the third generation hiber- 

 nating in the larval mines. 



Coleoptera include : Hypera (Phyfotoomus) variabilis, Hbst., which 

 is very destructive to lucerne, the adult weevils appearing at the 

 beginning of May. Anthonomus pomorum, L., was especially destruc- 

 tive in 1916, when three-fourths of the apple crop was injured. 

 The numbers have since considerably decreased owing to the presence 

 of numerous parasites of this weevil. Polyphylki olivieri, Lap. , caused 

 very serious damage to roots of vines and apple trees, especially to 

 seedlings. Mulberry trees also suffered very much, but whether from 

 P. olivieri or P. adspersa has not been ascertained. Epicometis 

 (Tropinota) Tiirta, Poda, E. (T.) seniculu, Men., and E. (T.) sutumlis, 

 Rttr., are not very serious pests of fruit trees, as the time of their 

 maximum appearance is not until blossoming is over. Several species 

 of Anisoplia are recorded, but the damage to grain is comparatively 

 slight. A table is given of the seasonal occurrence and numbers 

 collected of each species in each district. 



Diptera include : Chlorops taeniopus, Meig., which caused serious 

 damage to wheat and oats in 1916. 



Among Hymenopterous pests Cephus pygmaeus, L., has a wide 

 distribution, but its numbers are checked by its parasite, Collyria sp. 

 It appears as early as April and is chiefly found on wheat. 



UvARov (B. p.). noKaaaiejibHbm Mtponpifliifl fio 6opb6t ctj 



BpeAMTenflMM M 60Jlt3HflMH paCTBHiM Bli 1917 rOAy. [Demonstra- 

 tions in Control of Pests and Diseases of Plants in 1917.] — 

 «M3BtcTifl T.-3.-K. Biopo 6opb6bi cb epeAMTejiflMM cenbcnaro 

 X03fl(iCTBa.» [Bull, of the Bureau for Control of Agricultural 

 Pests], Tiflis, no. 3, September 1917, 46 pp. [Received 9th June 

 1919.] 



Demonstrations of the usual remedial measures for garden pests 

 were carried out in various districts of the Caucasus by the staff of 

 the Bureau. Hyponoineuta malinellus, Z., and H. variabilis, Z., were 

 very numerous during 1916, but their numbers were greatly diminished 

 in 1917 by spraying with Bordeaux mixture and Paris green. 



ArkHANGELSKY (P. p.). OnblTbl HO 6opb6t CT> KpOBflHOM M flpyrHMM 



TJIflMM. [Observations on the Control of Eriosonm lanigerum, 

 Hausm., and other Aphids.] — «kl3B'bCTifl T.-3.-K. Biopo 6opb6bl 

 CT. BpeAHTeJlflMM cenbCKaro X08flMCTBa.» [Bull, of the Bureau for 

 Control of Agricultural Pests], Tiflis, no. 5, October 1917, 23 pp. 

 [Received 9th June 1919.] 



Experiments made in Transcaucasia to ascertain the efficacy of 

 various insecticides as a remedial measure for Aphids are described. 



A mLxture of naptha-lysol and cresol as prepared by Nobel Bros. 

 as an insecticide is of no use against Eriosoma lanigerum, Hausm., if 

 made weaker than a 2| per cent, solution, but if used stronger than 3| 

 per cent, it is injurious to apple foliage. For Hyalopterus arundinis 

 {pruni F.) on peaches the only effective solution was 2| per cent., but 



(C577) c 



