300 Records of the Indian Museum. [Vol,. XVI, 



as in annandalei it is barely as much dipped as in Syrphus annu- 

 Upes, Zett. of Europe. This latter species has hairy eyes. 



Didea is supposed to have almost but not quite bare eyes, 

 and wholly black antennae, both characters appearing to me weak 

 as generic ones. The present species differs from jasciata by the 

 nearly whoU}^ orange fifth abdominal segment, the entirely yellow 

 legs (excepting the coxae), the absence of greyish stripes on the 

 thoracic dorsum and by its yellowish side margins, the whitish pu- 

 bescence on the thorax and pale yellowish on the scutellum. 



Family EPHYDRIDAE. 

 Halmopota viridescens, sp. nov. 



Seistan, E. Persia, Long, about 3J mm. 



Head broad, transverse, a little broader than thorax. Frons 

 and face extremely broad, occupying, seen from the front, fully three 

 fifths of the head ; frons ver}' flattened, face strongly projecting, 

 seen from above almost semicircular ; cheeks broad, forming a 

 conspicuous hind angle to lower part of head in profile ; the whole 

 head sharply cut off horizontally at the mouth border. Proboscis 

 with large labella, a])pearing like a large lower lip, the whole mouth 

 exceedingly frog-like. Eyes comparatively small, bare. Frons 

 greenish-grey, shining ; ocellar triangle bareh' elevated, yellowish, 

 with a weak upper pair of erect bristles and a much stronger lower, 

 proclinate pair. Vertical bristles long and strong, inner pair con- 

 vergent, outer pair divergent ; post vertical bristles absent. 

 Three pairs of strong fronto-orbital bristles, placed near eye-mar- 

 gins, with a weaker bristle above the ist and between ist and 2nd 

 (making five in all) nearly equidistant. A linear depression on 

 frons and face near eye-margins, making the ej^es appear a trifle 

 bulging Antennae short, ash grey ; ist joint very short, 2nd 

 thick, bluntly triangular, 3rd as long as 2nd, bluntly conical ; 

 arista bare, moderately long, black, distinctly plumose on upper 

 side only. Face ash grey, with a row of distinct bristles from side 

 to side, a little below eyes and antennae, following the curvature 

 of these organs ; a second row of similar bristles, though longer 

 ones, on mouth border, dwindling in point of size towards sides, 

 Entire face with minute black stiff hairs ; a slight greenish-grey 

 tinge to extreme upper part of face immediately below antennae. 

 Proboscis and labella brownish-grey ; occiput grey with short pale 

 pubescence. 



Thorax subquadrate, a trifle longer than broad, moderately 

 arched, greenish-grey, a little shining, with whitish dust. Five 

 pairs of dorso-central bristles, long and strong ; two humeral 

 (perhaps three) of unequal size ; two notopleural ; apparently 

 three supra-alar. A perpendicular row of stiff hairs, directed 

 backwards, on hind margin of mesopleura. Scutellum with one 

 bristle towards middle of side margin and one long apical one. 



.4 &^ow?('« greenish-grey with short stiff black pubescence. 



