386 (ESTEID^. 



to the reference in Colonel James Tod's " Annals and Antiquities 

 of Eajasthan " (Book iv, Chap. 27 ; 1st ed., vol. i, p. 722, 1829) 

 to the killing in Eajputana of an antelope, which, when stripped 

 of its hide, was found to have its whole carcase covei'ed with 

 large white maggots. Col. "Yerbury thinks that the ffistrid in 

 this case may be the same as that described by Brauer (Mon. 

 ffistr. p. 163) as infesting in great numbers an antelope (Antilope 

 dorcas, Pall.) captured near Damascus. This insect seems to be 

 known only in the larval state, though it has been thought to be 

 a species of Hypoderma, and a footnote to that effect is given in 

 Dr. William Crooke's recent edition of Tod's book (Oxford, 1920 ; 

 vol. ii, p. 834). See also remarks below, p. 396. 



TaUe of Gemra. 



1. Apical section of 4th vein running 



straight to wing-border, never bent 

 upwards ; 1st posterior cell therefore 

 wide open ; discal cell present or [p. 396. 



absent ; squamte small Gastrophilus, Leach, 



Apical section of 4th vein always bent 

 upwards towards tip of 3rd vein, 

 leaving 1st posterior cell narrowly 

 open or closed : discal cell always 

 present ; squaniEe very large 2. 



2. Second antennal joint conspicuously 



trilobed Cobboldia, Brauer, p. 391. 



Second antennal joint never trilobed . . 3. 



3. First posterior cell narrowly open .... Hypodebma, Latr., p. 394. 

 First posterior cell distinctly closed or 



even petiolate 4. 



4 Cheeks in profile much less deep than 



height of eyes ; antennae placed in a 



large single cavity; 3rd joint small, 



nearly globular, arista conspicuously 



thickened at base 5. 



Cheeks in profile much deeper than 



height of eyes ; antennfe placed in 



separate cavities, the intermediate 



space flush with the face; 3rd joint 



large, lenticular, outer edge irregular, [p. 402. 



arista slightly thickened at base .... Poetschinskia, Semenov, 

 5. Venation extended distally to the 



normal distance ; outer sides of 1st 



posterior and discal cells parallel 



with hind margin of wing CEstrus, L., p. 387. 



Venation shortened distallv, extending 



barely beyond three-fourths of the 



wing's length; outer sides of 1st 



posterior and discal cells at right [p. 389. 



angles to longitudinal axis of wing . . Cephalomyia, Latr., 



