132 DR. J. E. T. AITCHISON ON THE ZOOLOGY OF 



3. Tabanus, sp. 



A small greyish species, three lines in length, with the sides of the two basal segments 

 and margins of the following segments of the abdomen pale rusty yellow ; the legs 

 partially yellow ; wings hyaline. 



Mab. Hari-rud valley and Khorasan. 



[Near Mt. Do-Shakh my ponies were nearly driven mad with the numbers of this very 

 small species ; although in ones or twos they did not give much trouble, when in large 

 numbers, as I saw them, they were extremely irritating to the cattle, chiefly attacking 

 the head and fore legs. — J. E. T. A.] 



ASILID^. 



4. AsiLUS, sp. 



A large black species, clothed with yellowish-grey pile ; eighteen lines in length, with 

 hyaline wings. 



Hab. Hari-rud valley and Khorasan. 



[This large species of Asilus was seen in the Hariab valley and also in Khorasan, 

 Persia ; its bite is very severe to horses. — J. E. T. A.] 



Tachinid^. 



5. Tachina, sp. 



Possibly this is T. ititida of Walker. It is six lines in length, nearly black, with 

 somewhat smoky wings ; the abdomen shining, rusty reddish yellow, with a broad 

 median stripe and the apical segment black. The face is yellowish. 



Hub. Hari-rud and Badghis. 



[This hairy bee-like fly gave our horses much trouble on the march to Chashma-sabz 

 from Khusan, 1884. They seemed to live at the roots of bushes in clay soil, and were 

 disturbed in our riding through the scrub ; they were very silent and quick on the wing, 

 and always tried to land in the nostrils of the horse ; it is called " Kajak." — J. E. T. A.] 



RHYNCHOTA. 



HEMIPTERA. 

 SCUTELLERID^. 



6. Graphosoma semipunctata, Fabr. Syst. Ent. p. 698. 



Mr. W. L. Distant, who kindly examined this and the other Rhyuchota, considers the 

 specimens collected by Dr. Aitchison to be merely varieties of the European T. semi- 

 ■punctata. The thoracic spots are smaller than is usual in this species. 



Hab. Hari-rud valley. 



