1178 
DIPTERA OF AUSTRALIA, 
long black setaceous hairs ; the humeri deeply tipped with ochra- 
ceous; three longitudinal treble rows of shorter brown hairs may be 
indistinctly determined running almost parallel to one another to 
the middle of the thorax, where the intermedial row appears to 
terminate, the lateral ones not reaching the scutellum and not con- 
vergent ; under moderate amplification the fuliginous-brown of the 
thorax I’esolves itself into three very broad stripes, the lateral 
ones beginning just below the humeri and separated from the intei- 
mediate one by very indistinct ochraceous lines, the latter supporting 
the lateral rows of short brownish hairs ; pleurae and metathorax 
deep brown, nearly as dark as the thorax ; scutellum brown, 
more or less tinged with ochraceous, fringed with setaceous hairs. 
Halteres ochraceous-yellow, with a very minute brown pubescence, 
the hairs on the stem somewhat longer. Abdomen slender, about 
three times the length of the thorax, deep brown on the dorsal 
segments, the two terminal ones generally almost black, somewhat 
ochraceous-brown underneath ; densely clothed with tolerably 
long black hairs ; forceps densely haired, as wide as the terminal 
segment. Coxae ferruginous-ochraceous or ochraceous-yellow ; 
femora and tibiae brownish-ochraceous, the tibiae darker than the 
femora ; tarsi dusky brown. Tibial spurs black. In the fore-legs 
the tibiae | longer than the metatarsal joint. Wings as long as the 
body in the rather longer than the body in the pellucid with 
a very pale brownish-grey tint ; the costal and first, second and 
fourth longitudinal veins brown, the rest ])aler brown. Costal 
vein extending beyond the junction with the second longitudinal 
vein about two-thirds of the distance from that to the tip of the 
anterior branch of the fork of the third longitudinal vein ; 
auxiliary vein reaching the costa almost imperceptibly before the 
tip of the marginal cross-vein ; anterior branch of the second 
longitudinal inclined at an angle of about 45°, its base situated at 
a point somewhat before, immediately opposite, or slightly beyond 
the tip of the first longitudinal vein ; fork of the third longi- 
tudinal rather more than three times the length of the jjetiole ; 
fifth longitudinal vein disappearing at two-thirds of the distance 
to the margin. 
