1908.1 1^ 



smallish and nearly equal supra-antennal bristles, antennae small, palpi black 

 with a short terminal bristle; winga clear, veins fine and delicate and fringe 

 very short, eosta fine and black, about to middle of wing, 1 more than twice 

 as long as 2, inner branch of second thick vein inclined backwards towards 

 base of wing (fig.) ; legs brown, hind femora slender and tibia? bare; second 

 abdominal segment longer (ban the others, hypopygium moderately large, 

 anal protuberance small and black H mm. retroversa, n. sp. 



29 (28) Palpi not over large, nor bare. 



30 (31) Fronts distinctly longer than broad ; highly glossy. 



$ . Thorax and abdomen black, the former rather shining ; supra-antennal bristles 

 minute, antennae small, palpi small and black thickly margined with short and 

 stubby bristles ; wings dark yellowish-brown, veins dusky and fringe short, 

 costa to middle of wing, 1 scarcely longer than 2 ; legs black, fore tarsi thickened 

 (the first joint being about as wide as the tibia), hind tibiae bare, but their 

 upper surface curiously scored with diagonal furrows ; second abdominal 

 segment longer than any other ; hypopygium very large, glossy black at the 

 base, with a pair of large curved and pubescent lamellae, anal process minute... 



2 — 2j mm. nudipes, Beck. 



31 (30) Frons very broad (twice as broad as long), and dull. 



$ ? . Thorax and abdomen black, second abdominal segment armed with bristles 

 as in ruficornis ; four large and equal supra-antennal bristles, antennae {$) 

 large and oval, reaching when viewed in profile considerably above the centre of 

 the eye, ($ ) small and round, palpi small and yellow, the bristles ordinary ; 

 wings deeply tinged with brownish yellow, veins thick and brown, fringe very 

 short, costa fine and reaching beyond middle of wing, 1 more than twice as long 

 as 2, angle formed at the forking of second thick vein extremely acute (fig.) ; 



V 



legs yellowish-brown, hind femora rather slender, tibial cilia distinct, but short 

 and numerous ; hypopygium of moderate size, anal protuberance small and 

 yellow 2— 2i mm. fuscinervis, n. sp. 



32 (27) Meso-pleurse bristly, with at least one bristle extra long. 



33 (34) Legs pale. 



<J . Thorax and abdomen black, meso-pleurae with one extra large bristle ; frons 

 at least half as broad again as long, upper pair of supra-antennal bristles 

 moderately large, under pair minute ; antennae rather large, brown, sometimes 

 black, palpi yellow ; wings nearly clear, fringe short, costa well beyond middle 

 of wing, yellowish-brown, as also the veins, 1 about equal to 2 + 3, first thin 



