1180 
DIPTERA OF AUSTRALIA, 
marked laterally, more or less distinctly, with brown, especially 
in the ^ ; intermediate and hind pairs with an indistinct brownish 
spot on the front ; femora ochraceous ; tibiie and tarsi dusky 
brown, the tarsi considerably V)lacker than the tibiae. Tibial 
spurs black. In the fore-legs the tibiie ^ longer than the meta- 
tarsus. Wings as long* as the body, almost hyaline, marked 
with a diffuse fuscous-brown reticulation; behind the fourth longi- 
tudinal vein there is no reticulation, but an oblique spot extending 
nearly to the margin ; the base of the wing is clear to the marginal 
cross-vein ; a small brown spot occurs at the tip of cross-vein 
and another at the extremity of the auxiliary vein ; clear spaces 
occur a little before and a little beyond the anterior branch of 
the second longitudinal vein ; a space from the second longitu- 
dinal to the anterior branch of the fourth longitudinal, extending 
laterally from the base of the third sub-marginal cell about half 
way to the tip of the wing ; in the second sub-marginal cell a 
large roundish space under the extremity of the second longi- 
tudinal, and a small one under the tip of the costal ; between the 
third and fourth longitudinal veins and their branches roundish 
spaces occur on the posterior margin ; an oblong space at the 
bases of the first and second posterior cells, and a square in the 
middle of the latter reaching the veins anteriorly and posteriorly. 
Auxiliary vein reaching the margin over the tip of the marginal 
ci’oss-vein ; anterior branch of the second longitudinal vein very 
little oblique, rather more so in the 5, its base situated at a point 
considerably less than one-fourth the distance from the tip of the 
first longitudinal vein to the tip of the second longitudinal ; 
costal extending beyond the tip of the second longitudinal half way 
to the tip of the anterior branch of the third longitudinal. Fifth 
longitudinal very pale and indistinct, almost reaching the margin. 
Hab . — Elizabeth Bay (Skuse). December. 
Genus 10. Pseudoplatyura, gen.nov. 
Head small, broadly ovate, the fore part flattened ; vertex some- 
what elevated. Eyes long-oval, a little emarginate on the inner side 
above. Ocelli three, arranged in a triangle on the front, the middle 
