DIPTERA. 183 
with white hairs; hind borders of the abdominal segments tawny: legs 
pale tawny: wings colourless ; wing-ribs pale tawny ; veins pitchy, tawny 
at the base and along the fore border; poisers yellow with white knobs. 
Length of the body 3 lines; of the wings 64 lines. 
, East India. 
AntTuRax Antica, Fem. 
Nigra, fulvo-hirta, capite fulvo, scutello thoracis abdominisque lateribus 
ventreque ferrugineis, antennis piceis basi fulvis, pedibus nigris, alis 
limpidis basi et ad costam oblique et angulatim fuscis. 
Black: head mostly tawny, beset with short black bristles: epistoma 
prominent: feelers pitchy, dark tawny at the base: sucker pitchy: chest 
and breast clothed with tawny hairs: scutcheon and sides of the chest fer- 
ruginous: abdomen slightly obconical, a little broader but not longer than 
the chest; a large ferruginous spot on each side of the second, third and 
fourth segments ; underside dark ferruginous: legs clothed with short black 
hairs and bristles; thighs and shanks adorned with a dark tawny tinge: 
wings colourless, durk brown at the base and along the fore border for more 
than three-fourths of the length ; this brown part contains two tawny dots 
and has a slight ferruginous tinge, it is darkest along the outline which has 
three inward and as many outward irregular curves, is very oblique, and ter- 
minates on the hind border near the end of the inferior part ; wing-ribs 
pitchy ; veins black, pitchy at the base and along the fore border; poisers 
tawny. Length of the body 4 lines ; of the wings 10 lines. 
Columbia. 
ANTHRAX INSTITUTA, Fem. 
Nigra, angusta, flavo-pilosa, pectore cano, abdomine cinereo, antennis pe- 
dibusque nigris, alis cinereis fusco quadrimaculatis. 
Black, narrow: head clothed above with brown hairs, in front with 
tawny hairs: chest beset with black bristles: breast hoary, clothed with 
whitish hairs: abdomen gray, obconical, a little shorter than the chest, 
beset with a few black bristles, clothed on each side and at the base with 
dull pale yellow hairs: legs black, clothed with short black hairs and bris- 
tles; shanks pitchy; thighs tinged with gray: wings gray, rather long and 
