DIPTERA. 195 
varied with black: scutcheon yellow, adorned on the fore border with 
a black band which supports a short black stripe : abdomen tawny, obconi- 
cal, a little shorter than the chest, adorned near the base with a broad 
black band; tip compressed: legs tawny ; thighs with pitchy streaks ; tips 
of the shanks pitchy ; feet black: wings quite colourless ; wing-ribs tawny ; 
veins black, tawny towards the base and along the fore border; poisers 
tawny with pitchy knobs. Length of the body 3} lines; of the wings 7 
lines. 
New South Wales. 
Purareia compressa, Plate 6, fig. 3. 
Genus GERON, Hoffmansegg. 
GerRon capensis, Mas. 
Nigra, albo-hirta, pedibus fulvis, tarsis apice genubusque piceis, alis 
albidis. 
Black, thickly clothed with silvery hairs : mouth a little longer than the 
body: abdomen obconical, narrower and a little longer than the chest: — 
legs pale tawny, beset with very short black bristles; feet pitchy towards 
the tips; hips and claws black; knees pitchy: wings whitish ; wing-ribs 
yellow; veins tawny, yellow at the base and along the fore border ; poisers 
yellow. Length of the body 23 lines; of the wings 5 lines. 
Cape. 
Genus PHILOPOTA, Wiedemann. 
Puitopota sopria, Mas. 
Ferruginea, capite piceo, thorace vittis obliquis flavis ornato, lateribus scu- 
tello ventreque fulvis, antennis nigris, pedibus fulvis, alis subcinereis. 
Body ferruginous : head pitchy: eyes black, meeting on the crown ; 
facets of moderate size: sucker pale tawny, a little longer than the body : 
feelers black, very short: two diagonal stripes crossing each other in front 
of the chest; breast and sides of the chest tawny : abdomen obconical, much 
longer than the chest, tawny on each side and beneath : legs tawny: wings 
