842 DIPTERA OF AUSTRALIA, 



Head brown, with a yellowish -grey bloom ; rostrum, palpi and 

 antennae dark brown ; first flagellar and apex of second basal joint 

 usually ochreous-yellow ; flagellar joints becoming very slender 

 and cylindrical towards tip, the first flagellar joints elliptical ; 

 short bristly verticils. Thorax brown, with fourpale^ ochreous or 

 greyish, narrow stripes ; two intermediate ones stopping just before 

 the suture ; the lateral ones extending opposite the origin of the 

 wings. Halteres brown. Abdomen brown ; ^ forceps brown, of 

 ordinary structure ; 9 ovipositor long, a little curved, testaceous or 

 ochreous. Legs light ochreous, densely clothed with tolerably long 

 hairs ; tibiae and tarsi brownish at the tips. Wings almost com- 

 pletely tinged with brownish ; the extreme apex clear whitish, 

 usually from tip of anterior branch of second longitudinal to tip 

 of anterior branch of fourth longitudinal vein ; also usually a small 

 whitish clear space at each end of stigma; stigma and veins brown. 

 Auxiliary vein reaching costa about opposite inner end of second 

 sub-marginal cell ; sub-costal cross-vein a short distance before its 

 tip ; sub-costal cell a little expanded just before tip of first longi- 

 tudinal vein ; prsefurca moderately long, almost straight (quite 

 straight and originating at a very acute angle in some specimens) ; 

 petiole of first sub-marginal cell as long or longer than great 

 cross- vein ; marginal cross- vein pale, situated mid- way between 

 inner end of first sub-marginal cell and tip of first longitudinal 

 vein ; branches of second longitudinal, especially the posterior, 

 arcuated ; second sub-marginal cell slightly shorter than first 

 posterior cell ; second posterior cell short, less than half the length 

 of first posterior ; discal cell rather elongate, its inner end situated 

 before that of the first posterior cell a distance nearly equal to 

 length of great cross- vein ; inner end of fourth posterior cell 

 before that of third posterior a distance about equal to length of 

 great cross- vein ; great cross-vein beyond inner end of discal cell ; 

 seventh longitudinal vein sinuated. 



Hab. — Sydney, Berrowa and Knapsack Gully, Blue Mountains, 

 N.S.W. (Skuse). April and August. 



