igiq.] E. Briw'ETti : Neic Diptera from Seistan. 301 



Legs. Coxae and femora black, grey dusted ; tips of latter 

 narrowly, and remainder of legs brownish-orange ; stiff black hairs 

 on tarsi. Pubescence of legs black, meagre. 



Wings greyish, a little yellowish at base; halteres dull orange. 



Described from 3 specimens, apparently cf cf (two in indiffer- 

 ent condition), taken on the surface of a watercourse, Chilling, 

 Seistan, 20-xii-i8 {Annandale and Kemp). These specimens are in 

 the collection of the Indian Museum. 



The present species does not quite fulfil the generic characters 

 of H almopota , owing to the presence of the row of very conspicuous 

 bristles directed downwards from the lower edge of the mouth 

 border, and which Becker distinctly states should not be present. 

 There is also no prominent bristle on each side of the face near 

 the lower angle of the eye. Apart from these points viridesccns 

 agrees remarkabh' closely with Becker's figure of the head in 

 profile.' 



Specifically the present species differs from the European 

 salinarum, Bouche, by the greenish (not velvet black) frons and 

 abdomen and also by the blackish (not reddish) femora. 



From the onl)' other known species, mediterranean Lw., it 

 principally^ differs (in addition to the above two characters) by the 

 third and fourth veins not being convergent towards the tip. It is 

 rather smaller than both the known species. 



i Berl. Ent. Zeits. XLI, pi. v, 4 (1896). 



