680 DIPTERA OF AUSTRALIA, 



fork of the third longitudinal vein (thitd sub-marginal cell) is 

 at once a distinguishing chaiacter visible to the naked eye. I 

 have only taken a single specimen in each of the above-named 

 localites. 



102. SCIARA LUCTIFICA, Sp.n. 



(J. — Length of antennas 0-075 inch ... 189 millimetres. 



Expan.se of wings 0-UO x 0-050 ... 3-55x1-27 



Sizeof body 0-120x0-025 ... 3-04x0-62 



Antennte pitch-brown, with a yellowish-brown pubescence ; 

 rather slender ; more than half the length of the wings ; basal 

 joints pitch-brown, with a very sparse but longer pubescence than 

 that on the flagellar joints ; flagellar joints sub-sessile, Ig^ to 24 

 times as long as broad. Head black. Eyes contiguous aliove. 

 Palpi pitch-bi-own. Thorax black or very deep brown, levigate with 

 two indistinct longitudinal rows of ver}"^ short yellowish-brown 

 hairs ; pleune deep reddish-brown ; scutellum with a very minute 

 sparse pubescence. Halteres pitch-brown, yellowish at the base, 

 with a most minute .spai'se pubescence ; club large, pyriform. 

 Abdomen pitch-brown, with a somewhat dense long yellowish- 

 brown pubescence ; considerably broader at the base than the 

 thorax, the last four segments becoming narrower ; forceps pitch- 

 brown, densely pubescent, broader than the terminal segment of the 

 abdomen. Legs pitch-brown, densely covered with a fine yellowish- 

 brown pubescence ; fore femora rather shorter than the intermediate 

 ones, hind femora somewhat longer than the latter ; intermediate 

 tibiaa ;\ longer than the first, hind tibise slightly longer than the 

 intermediate ones ; spurs yellow, about as long as the fourth joint 

 of the tarsi ; tarsal joints of all the legs of about the same length, 

 except that the first joint of the intermediate and hind tarsi is 

 rather more than J longer than that of the fore tarsi ; second 

 joint of the tarsi ^ longer than the fourth ; third joint just per- 

 ceptil)ly longer than the fifth. Wings with a very pale somewhat 

 reddish-brown tint, reflecting brilliant opaline colours when viewed 

 at a certain obliquity. Petiole much paler than the fork and 

 shorter than the aiiterior branch ; tip of the anterior branch 



