1166 
DIPTERA OF AUSTRALIA, 
the first, extending from the anterior branch of the second longi- 
tudinal to the tip of the costa, thus entirely filling the first sub- 
marginal cell, and reaching posteriorly to the middle of the second 
submarginal cell. The auxiliary vein joining the costa opposite 
the base of the marginal cross-vein ; anterior branch of the second 
longitudinal vein joining the costa a little beyond the tip of the 
first longitudinal ; costal extending beyond the tip of the second 
longitudinal vein 1 of the distance from that to the tip of the 
anterior branch of the third longitudinal. 
9. — Antenme about the length of the thorax, the joints deep 
brown, nearly black (in some specimens with an almost imper- 
ceptible tinge of lighter brown on the flanks of the first six or 
seven flagellar joints), terminal joint and nipple-shaped projection 
lighter brown than the rest. Thorax brown, sometimes almost 
Idack, with little or no indications of the ochraceous brown found 
in the Pleurie and metathorax ochraceous or ochraceous- 
whitish, irregularly blotched with brown or deep brown ; scu- 
tellum brown or deep brown. Halteres black, the base of the 
stem yellow. Abdomen flat, about the width, and two and a half 
times the length, of the thorax, uniformly black, .sometimes with 
a brownish tinge underneath ; lamellse of the ovipositor black or 
deep btown. Coxae ochraceous-whitish or ochraceous, the inter- 
mediate pair without Ijrown spots. Wings rather more than | 
the length of the abdomen, dusky at the apex ; posterior branch 
of the fork of the third longitudinal, both branches of the fourth 
longitudinal, and the fifth longitudinal vein not quite reaching the 
wing-margin. 
Hah . — Elizabeth Bay, near Sydney (Masters and Skuse). 
September to March. 
Genus 8. Heteropterna, gen.nov. 
Head large, as wide as the thorax, almost circular from below'. 
Eyes large, oval, entire, very approximate on the face. Ocelli 
three, in a curved line on the front, the middle one much smaller. 
Palpi short, very like those of Ceroplatus. Antennae projecting 
