PROCEEDINGS 



GENERAL MEETINGS FOR SCIENTIFIC BUSINESS 



ZOOLOGICAL SOCIETY OF LONDON. 



PAPERS. 



23. The Geographical Distribution of Orthopterous Insects 

 in the ( Caucasus and in Western Asia. By B. P. 



UVAROV *. 



(With Map.) 



[Received October 25, 1920 ; Read Marcli 8, 1921.] 



Introditction. 



In 1913 I undertook the systematic study of the Orthopteran 

 fauna of the Caucasus and neighbouring countries (Asia Minor^ 

 Armenia, Northern Persia), based on the large collections of the- 

 Caucasian Museum in Tiflis and literary sources, as well as upon 

 my own investigations in Northern Caucasus (in 1911-1914) 

 and in Transcaucasia (in 1915-1919). This work offered great 

 difficulties, as our knowledge concerning the systematic and 

 geographical distribution of the Orthoptera, and those of Western 

 Asia in particular, is as yet very incomplete. Besides, the war 

 deprived me of the possibility of referring to Western European 

 scientific centi-es and of obtaining from them the necessary 

 literature and information. The materials which I have had 

 before me, though not very extensi-ve, give different impressions 

 concerning the faunas of different districts, and some of the latter 

 are still awaiting more careful investigation. I think, however, 

 that it would be of some use for these future investigations if I 

 gave a short summary of the chief zoogeographical results I have 

 gained from my studies, incomplete and insufficient though they 



* Communicated by S. A. Neave, F.Z.S. 



Proc. ZooL. See— j921,No. XXXI. 31 



