DIPTERA. 223 
black, tawny at the base; poisers tawny. Length of the body 2} lines; of 
the wings 44 lines. 
Brazil. 
Baccus MaAcunata, Mas. 
Ainea, capite cyaneo, abdomine cupreo segymentorum marginibus anticis 
fulvis, antennis pedibusque fulvis, femoribus tibiisque posticis piceo 
cinctis, tarsis posticis piceis, alis fulvis fusco variis. 
Structure of B. tabida, Head metallic-blue : eyes bright red: feelers 
tawny: chest brassy ; hind part bluish on each side: abdomen coppery ; fore 
borders of the segments tawny: legs tawny; a pitchy band on each hind- 
thigh and hind-shank; hind-feet pitchy : wings tawny ; two brown marks 
on the fore border ; cross-veins clouded with brown ; wing-ribs tawny ; veins 
black, tawny at the base; poisers tawny. Length of the body 5 lines; of 
the wings 8 lines. 
East Indies. 
AMATHIA, n. g. 
Bacche affinis: femora subtus spinulosa: ale yena submarginali 
undata. 
Allied to Baccha; thighs armed beneath with little spines ; submar- 
ginal vein and the two cross-veins inclosing the submarginal and first pos- 
terior areolet very much waved. 
AMATHIA cosTALis, Mas. 
Flava, thoracis disco abdomineque nigris, hujus fasciis fulvis, antennis 
Sulvis, pedibus flavis, femoribus apice tarsisque fulvis, pedibus posticts 
fuscis, alis limpidis ad costam furcato-fuscis. 
Head yellow ; a forked pitchy spot above the base of the feelers ; ano- 
ther pitchy spot in front of the feelers: eyes red: feelers dark tawny: chest 
and breast yellow: disk of the chest black: abdomen black with tawny 
bands: legs yellow ; tips of the four anterior thighs tawny ; hind-thighs 
and hind-shanks brown; feet tawny; hind-feet brown towards the tips: 
wings colourless ; a brown stripe along the fore border sending forth a very 
