1168 
DIPTERA OF AUSTRALIA, 
above the origin of the wings; densely covered with short deep 
brown hairs; pleurae deep brown, rnarmorated with pale ochraceous ; 
scutellum deep brown, fringed with black setaceous hairs. Halteres 
short, the stem thick, yellow, the club large, pyriform, deep brown 
almost black; with very little visible pubescence. Abdomen flat, 
almost the width, and rather more than three times the length, of the 
thorax; first segment much narrowed ; terminal segment narrower 
than the first, cylindrical ; deep brown, the last two segments black; 
third and fourth dor.sal segments bordered anteriorly with pale 
ochraceous, the fifth with a small pale ochraceous spot on the 
anterior corners ; second, third and fourth segments rnarmorated 
underneath with pale ochraceous ; forceps about the width of the 
terminal abdominal segment, cleft at the extremity, the inner arm 
with a small spur at its inner angle (PI. xxxi., fig. 4c). Fore coxae 
ochraceous, brownish at the base ; intermediate and hind paii’S 
deep brown ; remaining joints in the fore- and intermediate-legs 
brownish-ochraceous, in the hind-legs deep brown, except that the 
ba.sal half of the femora is ochraceous, Tibial spurs of the first 
two pairs of legs ochraceous-brown, those of the hind pair larger, 
pale ochraceou.s. Intermediate and hind coxae shorter, and the 
latter more rbbust than the first pair. In the fore-legs the femora 
very little longer than the coxae, the tibiae about same length as 
the femora, and the tarsi times the length of the tibiae ; in the 
intermediate legs the femora about twice the length of the coxae, the 
tibiae a little longer than the femora, and the tarsi 1^ times the 
length of the tibiae; in the hind-legs the femora .somewhat more than 
twice the length of the coxae, the tibiae about ]- longer than the 
femora, greatly swollen towards the apex when they are about as 
thick ais the coxae, the tarsi about the length of the tibiae, metatarsal 
joint very robust, about as thick as the coxae of the fore-legs, second 
joint about the thickness of the fore or intermediate tibiae, the 
remaining joints more slender, but twice the thickness of the 
corresponding joints of the other legs (figs. 4d and 4e). Wings 
not I the length of the body, pellucid, with pale greyish-brown 
tint, darker at the apex ; a somewhat indistinct spot in the 
marginal cell, under the tip of the first longitudinal vein, also a 
