OR THOP TEliA A ClUDI ODEA . 



K09 



3 (4). Lamina subgenitalis J obtuse, not marginated at the apex 



Anal area of the elytra infiiscated at the base. Hind femora 

 with sharp black markings on the upper side keel. 

 5 (fi). Pronotum with sharply delimitated black stripe alonfj the 

 median carina. Elytra with numerous laige black spots. 'Hind 

 tibise sanguineous, with 15-17 spines on the outer side and about 

 13 on the inner side; hind tarsi rose. 



Th. littoraUs, Ramb. 



<5 (5), Pronotum with only median carina black, the median stripe 

 being castaneous and not sharply defined. Elytra without 

 any black spots or points. Hind tibise yelloAvish-grey. with 

 9-10 spines on both sides ; hind tarsi yellowish. 



Th. huxtoni, Uvar. 



4 (3). Lamina subgenitalis o marginate at the apex. Anal ai-ea of 



elytra not infuscate ; elytra with numerous black spots. Hind 

 femora with indistinct testaceous patterns on the outei' side. 

 Hind tibiae rose, with 15 spines outwai'ds and 12 inwards. 



Th. adspersus, Redt. 



~,n. Euprepocnennsplorans (Charp.) — Beit Na'ama near Basrah, 8-4-10 (Mr. 

 Evans). — The following Walker's species are synonymous with E. 

 plorans as I am convinced from the study of type specimens in the 

 British Museum : 



1870. Cyrthacanthacris ornatipes, Walk., Cat. Derm. Salt. Brit.^iLi?., 

 iii, p. 575, N. 50. 



1870. Heteracris consobrina. Walker, 1. c, iv, pp. 673, 674, No. 40. 

 The Zoocjeographical character of thz A'-.ridiodecin fauna 

 of Mesopotamia. 



The records on the Mesopotamian Acridiodean fauna, previous to this one, are 

 rather scarce, but, nevertheless, we can find in them some species not taken by 

 Dr. Buxton and Mr. Evans. 



Saussure in his " Prodronuss OEdipodiorum • (p. 149) quotes (2/fZi^j9ia //t«;«'ate<, 

 Pall. var. flava from Baghdad, but the general character of distribution of this 

 Tiipecies leaves no doubt that either Saussure's determination of the specimen 

 or its label is wrong. In the " Additamenta ad Prodromum " the said author 

 described from Baghdad Cobozoa rogenhaferi, Sauss. (1. c, p. 62, tab. 2, fig. 4, 41!, 

 46, 4c) which is synonymous with Miosdrtus wagneri, Ev., as I have stated above 

 In 1913 N. Jkonnikov'' published a list of Mesopotamian Acridiodea collected in 

 1910 by the Austrian Pietsclimann's Expedition, and in this list 19 named species 

 -are recorded, ten of them being not found again by our collectors. In 1916 r I 

 had the opportunity of working out a collection of OrthoiJtera made by P. Nes- 

 lerov on his journey along the Turko-Persian boundary, i.e., partly in the 

 Mesopotamian j^lains ; in this list ten species of Acridiodea are recorded, amongst 

 them two not taken by Dr. Buxton and JMr. Evans. Thus, the number of species 

 known from Mesopotamia is 43. If we compare this figure with the number of 

 .species known from Transcaspia which is about 70, we may conclude that the 

 bulk of Mesopotamian fauna is already known and the list of known species 

 may serve rather well the purpose of drawing some Zoogeographical conclusions. 



* Ann. Natnrhist: Hofmuseums Wien, xxvii, pp. 389-390. 

 t Bull c!u Musee du Caucase, x, 1916, pp. 181-194. 



