466 ME. B. p. UVAROV ON THE GEOGRAPHICAL DISTPaUUTION 



Yery characteristic of the Adevbaidzhan fauna are also nu- 

 merous Eremian genera and species, for example : Uremiaphila, 

 Oxythespis, Jlelioscirtits, SjjJiingonotics, Derocorys, Sj^hodro- 

 •merus, etc. 



Summarising the results of our analysis, we may characterise 

 the fauna of the Aderbaidzhan district as a true Eremian one, 

 with a well-marked admixture of "ancient Mediterranean" forms 

 and with very slight indications of the steppe fauna, which pene- 

 trates here through the Somkheto-Kakhetian and Armenian 

 districts. 



I include in the Aderbaidzhan district the Persian province 

 bearing this name (but not the recently formed republic of 

 Azerbaidzhan in Transcaucasia), as well as the valley of middle 

 Arax from Kaghyzman as far as Migry. Thus, the northern 

 boundary is to be drawn along the southern slopes of the Minor 

 Caucasus at a somewhat considerable height, about 6000-7000 feet 

 above the sea-level. To this district also belongs (I am not yet 

 sure whether partly or wholly) the Karabagh, Avhere the Ader- 

 baidzhan fauna comes in direct contact with the here already 

 impoverished Somkheto-Kakhetian one. Farther eastwards the 

 northern boundary of Aderbaidzhan goes along the eastern 

 boundary of the Zangezur chain and near Migry goes over the 

 Arax, turning eastwards nearly parallel with the latter river along 

 the chain of Karadagh as far as the Talj^sh chain ; farther on 

 the boundary of Aderbaidzhan coincides with the latter chain. 

 The western boundary is the same as the eastern limit of 

 Armenia, which we have already considered above. As for the 

 southern limit it is as yet unknown, but theie are some indications 

 that it lies rather far southwards in Central Persia. 



12. The district of Caspian Transcaucasia (T.C.). 



The Orthopteran fauna of the deserts of the eastern or Caspian 

 Transcaucasia as compared with other districts has been more 

 fully investigated. The amount of its known species is 98 

 (6 M + 1 P -j- 50 A + 24 L + 17 G), which number is, I suppose, 

 very near to the real one. 



If we take into consideration the uniformity of this district, its 

 fauna may be regarded as a rather rich one, though poorer than 

 that of Aderbaidzhan. The difference between the fauna of the 

 latter district and that of Caspian Transcaucasia appears to be a 

 very marked one, since as many as 45 Aderbaidzhanian forms do 

 not reach Caspian Transcaucasia. Out of them 23, that is nearly 

 half, are species of " ancient Mediterranean " origin, as follows : 



Pallasiella bolivari. 4 species of Nocarodes. 



P3a-godera arraata. Diymadusa grisea. 

 Bruiiuerella mirabilis. „ konowi. 



Heliopterj^x liumeralis. 4 species of Paradrymadusa. 



Charora crassivenosa. Platycleis persica. 

 Trinclius schrenki. „ squamiptera. 



4 species of Tmetliis. Olynthoscelis satuiiini. 



