1382 
DIPTERA OF AUSTRALIA, 
of their tarsi. Coxae and femora of the fore-legs longer and 
stouter than those of the other legs. Fore tibiae spined as in 
lonyirostris, except that the second row of three spines is as near 
the apex of the tibiae as the row of two is to the base. All tarsal 
joints equally slender. Wings about the length of the thorax 
and abdomen taken together, hyaline j stigma prominent, umber- 
brown; veins umber-brown, the costal, first two longitudinal 
veins, and marginal cross-vein rather more distinct than the third 
and fourth longitudinal veins ; auxiliary vein yellow ; pubescence 
extremely microscopic, brilliant green and blue reflections. 
Costal vein extending beyond the tip of the second longitudinal 
vein more than half way from that to the tip of the anterior 
branch of the third longitudinal fork ; auxiliary vein long, almost 
invisible towards the tip, joining the costa immediately beyond 
the tip of the marginal cross-vein ; an almost imperceptible trace 
of a sub-costal cross- vein situated as in D. lonyirostris ; the space 
between the auxiliary and costa, yellowish ; first longitudinal vein ! 
disappearing just before the costa from the marginal cross-vein j 
enveloped in the stigma, its tip almost opposite but immediately 
before the tip of the anterior branch of the fourth longitudinal i 
vein ; base of the marginal cross-vein situated opposite that of 
the middle cross-vein, the latter scarcely visible (totally absent in 
some specimens) ; tip of the second longitudinal vein rather 
nearer the apex of the wing than that of the anterior branch of 
the fork ; middle cross- vein joining the third longitudinal before 
the base of the fork ; fifth longitudinal vein long, very pale, not 
reaching the wing-border. 
Hub . — Knapsack Grully, Blue Mountains (Masters and Skuse). 
September. 
Genus 4. Scatopse, Geoflf. 
Scatopse, GeoflTroy, Ins. II. 1764, p. 545, Le Scathopse noir; 
Meig. Syst. Beschr. I. 1818, p. 299 ; Macquart, S. a B. Dipt. I. 
1834, p. 181. 
