1380 
DIPTERA OF AUSTRALIA, 
^ and 5. — Antennae very short, black 2 - + 9 -jointed ; in the ^ 
inserted near the base of the proboscis, in the 9 about one- 
third of its length. Head, eyes, proboscis and palpi black ; front 
nitidous. Proboscis the length of the head. Palpi inserted near 
the extremity of the proboscis ; first joint very small, second 
pyriform, third dilated, larger than the I’est, fourth sub-globose, 
fifth almost elliptical, rather smaller than the last. Thorax, 
pleurae, pectus, scutellum and metathorax black, nitidous, with 
pale yellow hairs ; the two ranges of prothoracic spines better 
developed in the 5. Hal teres black, the stem more or less testa- 
ceous. Abdomen black, somewhat shining, clothed with pale 
yellow hairs, the latter much larger in the ^ than in the $ ; in the 
slender, twice the length of the thorax, in the 9 almost the 
width of the thorax and twice its length ; terminal lamellae of the 
ovipositor black. Legs black ] in the 5 the fore coxae and femora 
more or less testaceous, tibiae brown. Fore femoi’a shorter and 
broader than the other pairs, about half the length and twice the 
bi’eadth of the hind pair ; the latter claviform. Fore and inter- 
mediate tibiae short ; fore pair with two spines near the base, and 
three at the middle, on tlie front, also a coronet of spines at the 
apex, these much more distinct in the ^ than the ^ ; inter- 
mediate tibiae of the ^ with an apical coronet of weak sjiines. Tn 
the ^ the first four tarsal joints of the hind-legs enormously 
dilated, particularly the first joint, which is much wider than the 
femora of the same legs, second joint about the width of the 
apex of the tibiae, the rest decreasing in size ; in the 9 the tarsal 
joints of all legs very slender. Wings longer than the abdomen ; 
in the ^ hyaline, in the 9 with a pale yellow tint ; stigma pro- 
minent, brown ; costal, first, and second longitudinal, and marginal 
cross-vein brown, the rest pale ; pubescence extremely micro- 
scopic ; opaline reflections. Costal vein extending beyond the tip 
of the second longitudinal vein not half-way from that of the tip 
of the anterior branch of the fork of the third longitudinal ; 
auxiliary vein long, very indistinct towards its tip ; joining the 
costa immediately beyond the tip of the marginal cross-vein, in 
