DIPTRRA. 103 
PSEUDORUS, n. g. 
Antennis articulus 3us subovatus, compressus, dilatatus, lo et 20 fere 
triplo longior: thorax gibbus: alis areole submarginales tres ; areole pos- 
tice quinque, 4a subclausa aut clausa ; areola la inferior clausa. 
Third joint of the feelers nearly oval, much deepened and flattened, 
nearly thrice the length of the preceding joints: chest gibbous, or rising 
into a prominent cone, whose tip is slightly furrowed: three submarginal 
areolets ; five posterior areolets; the fourth nearly closed or quite closed 
by the abrupt downward curve of the vein which furms its outer side ; first 
inferior areolet closed. 
Psxvporvus picEus, Plate 4, fig. 5. 
Fem. Piceus, abdominis apice ferrugineo, antennis rufis basi ferrugineis, 
articulo 20 nigro, pedibus piceis, tibiis basi fulvis, tarsis posticis basi 
flaris, alis antice fulvis fuscoque unimaculatis posticé cinereis, apice 
Fuseis. 
Body pitchy, shining: thinly clothed with short black hairs: head 
black, transverse, as broad as the chest: eyes black; facets very small: 
sucker black, its tip clothed with pale yellow hairs ; palpi dark ferruginous, 
clothed with tawny hairs: feelers as long as the head, first and second 
joints clothed with a few black bristles; first joint dark ferruginous; se- 
cond black; third bright pale red: abdomen pitchy, shining, about twice 
the length of the chest, linear for half the length from the base, tapering 
slightly from thence to thetip, which is ferruginous: legs pitchy, shining, 
beset with black bristles, which are mostly on the shanks; shanks tawny 
at the base; claws black ; foot-cushions tawny; hind feet yellow at the 
base’: wings tawny beneath the fore border, gray towards the hind border 
for more than two-thirds from the base, dark brown from thence to the tips; 
a large brown spot at one-third of the length of the tawny part; wing-ribs 
pitchy; veins black; poisers tawny. Length of the body 8 lines; of the 
wings 17 lines. 
South America. 
