472 ON THE GEOGRAPHICAL DISTRIBUTIOJJ OF ORTHOPTEHA. 



the leading forms of the Boreal fauna (Chrt/sochrccou, Psoj)7ms, 

 Meconema) ; their presence here, together with their absence from 

 the mountains of Armenia, allows us to conclude that they came 

 here somehow from the Great Caucasus, perhaps by the transverse 

 chain of Suram which joins the mountains of the Minor Caucasus 

 to the main chain. In this characteristic admixture of boreal 

 forms, as well as in the presence of two endemics {Stenohothrus 

 werneri sviridenkoi and Platydns iljinskii), I see the sufficient 

 cause for separating this district from Armenia,. 



The district of Caucasus Minor occupies the high table-lands 

 of Akhalkalaki, Kars, and Alexandropol, sending a narrow and 

 long branch along tlie shores of the Goktcha Sea and, fai-ther 

 south-eastwards, along the chain of Zangezur. The northern 

 boundary coincides with the upper limit of Somkheto-Kakhetian 

 forests; the western goes along the Arsian chain; and the 

 southern is exceedingly circuitous, being not yet satisfactorily 

 explored. 



The difficult task of drawing the accompanying map of 

 zoogeographical districts has been undertaken in a most friendly 

 way by P. I. l^agorny, and I avail anyself of the opportunity of 

 once more expressing my sincere gratitude to him. 



EXPLANATION OV THE MAP. 



ZooffeograpMcal division oftlie Caucasus and Western Asia. 

 (Toxt-'fig. 1, p. 454.) 



PAL.EARCTIC REGION. 

 I. Steppe subregion. 



South-Russian Steppe province. 



E.M. (Ho'-'sia ineridioiialis). — South-Russian district. 

 K.-T.— Kubau-Terek district. 

 D. — Dagliestan district. 



II. Mediterranean subregion. 



JSalkano- Anatolian province. 



XT. — Novorossiisk district. 

 P. — Pontian district. 

 S.-K. — Somkheto-Kakhetian district. 

 CM. — District of the Caucasus Minor. 

 T.— Talysh district. 

 Ar. — Armenian district. 

 A.M. (Anatolia mediterranea). — Western Anatolian district. 

 A.S. — District of the Syrian Anatolia. 



III. Erem.ian subregion. 



1. Iranian pj'ovince. 



Ad. — Aderbaidzhan district. 

 T.C. — District of the Eastern (C.ispian) Transcaucasia. 



2. Turanian province. 



C.C. — District of the Eastern (Caspian) Ciscaucasia. 



IV. Caucasian subregion (?). 



C.Oe. — (Caucasus occidentalis). — District of the Western Caucasus. 

 C.Or. — (Caucasus orientalis). — District of the Eastern Caucasus. 



