636 DIPTERA OP AUSTRALIA, 



Antennae very short, black, 2- + 8-jointed. Head, eyes, pro- 

 boscis and palpi black. Proboscis very short. Thorax entirely 

 black, nitidous, with two longitudinal single rows of tolerably 

 lonof black hairs ; two ranges of rather weak prothoracic spines. 

 Halteres dark brown or black. Abdomen slender, black, nitidous, 

 clothed with tolerably long black hairs. Coxae and femora black, 

 nitidous ; tibiee dark brown or black, testaceous at the base ; fore 

 and intermediate tarsi black, the hind pair testaceous. Fore 

 femora a little shorter than and twice as broad as the intermediate 

 pair, about half the length of the hind pair ; the latter slender at 

 the base, with the apical two-thirds fusiform. Fore and inter- 

 mediate tibiiB short, slender, about the same length as their 

 respective femora ; hind pair long, claviform ; fore pair with 

 three or four spines in front, immediately before the middle, and 

 a coronet of spines at the apex. In the hind-legs the first four 

 tarsal joints enormously dilated, the first joint about as wide as 

 the apex of the femora, the rest progressively decreasing in size. 

 Wings shorter than the entire body, pellucid, almost hyaline, with 

 a slightly yellowish tint ; stigma prominent, brown ; costal, first 

 two longitudinal veins and cross-vein brown, the rest paler ; 

 brilliant reflections. Costal vein extending beyond the tip of the 

 third longitudinal vein, rather less than half way from that to the 

 tip of the anterior branch of the fork ; auxiliary vein long, pale, 

 joining the costa immediately beyond the cross-vein ; sub-costal 

 cross-vein indistinct, situated opposite the base of the fork of the 

 fifth longitudinal vein ; tip of the first longitudinal vein enveloped 

 in the stigma, disappearing before reaching the costa ; middle 

 cross-vein situated at or before the base of the fork of the fourth 

 lonf'itudinal vein ; sixth longitudinal vein long, indistinct, not 

 reaching the wing-border. 



^rt6.— Mount Kosciusko, N.S.W., 5000 ft. (Helms), several $ 

 specimens in March. I)i Coll. Australian Museum. 



Ohs. — At first sight this species appears most like D. longiroslris, 

 Macq., but the short rostrum will at once distinguish it. 



