1384 
DIPTERA OF AUSTRALIA, 
very short yellow hairs. Coxae black. Femora, tibiae and tarsi 
brownish-black, densely covered with very short yellow hairs. 
Fore coxae and femora considei’ably more dilated than the inter- 
mediate or hind pairs. All tibiae of equal thickness, the hind 
pair longest. Wings the length of the entire body, nearly thi-ee 
times as long as wide, hyaline, yellowish at the root, beautifully 
iridescent ; costal, first and second longitudinal, and marginal 
cross- vein yellowish-brown, the rest very pale and indistinct. First 
longitudinal joining the costa at a point one-third the distance 
from the base of the latter to the tip of the second longitudinal ; 
marginal cross-vein extremely short ; costal vein extending 
slightly beyond the tip of the second longitudinal vein, termi- 
nating nearer opposite the tip of the posterior branch of the third 
longitudinal vein than to the tip of the fourth longitudinal vein; 
base of the fork of the third longitudinal situated about the 
middle of the wing, the anterior branch with a short indistinct 
transverse wing-fold issuing from it not far from the base, reaching 
half-way across the first sub-marginal cell ; fifth longitudinal vein 
reaching the posterior border much beyond the tip of the first 
longitudinal vein. 
Hah . — Sydney (Skuse). October. 
Ohs . — This species does not appear common, as 1 have only seen 
a single specimen. It is easily distinguished at once from the 
following by the length of the costal and second longitudinal veins, 
and the pale stripe on the pleurae. At first I was inclined to 
believe this to belong to the cosmopolitan S. notata, but it does 
not quite agi’ee with the description given by Loew (Linn. Ent. I, 
1846, p. 325), though his figure of the wing shows a venation 
scarcely distinguishable from that presented in the above insect. 
190. SCATOPSB FENESTRALIS, Sp.n. (PI. XXXIX., fig. 10, $). 
(J. — Length of antennae 0-020 inch ... 0-50 millimetre. 
Expanse of -wings 0-080 x 0*035 ... 2-02 x 0-88 
Size of body 0-075 x0-017 ... 1-89 x0-42 
