378 INSECTA SAUNDERSIANA. 
Genus LONCHZA, Fallen. 
Loncua InpistinoTa, Fem. 
Cyanea; caput atrum ; pedes nigri, tarsis fulvis ; ale limpide. 
Deep blue: head deep black; face shining: mouth pitchy: feelers 
black : legs black; feet tawny : wings colourless ; veins pitchy, tawny to- 
wards the base and along the fore border: halteres tawny. Length of the 
body 2 lines; of the wings 4% lines. 
Brazil. 
Loncuza Brasitiensis, Mas. 
Piceo-nigra ; antenna, tibia tarsique posteriora et ale fulva. 
Pitchy black, shining: epistoma not prominent: mouth black : feelers 
tawny ; third joint almost conical, not nearly reaching the epistoma, about 
twice the length of the second; sixth black, feathered with long hairs, 
much more than twice the length of the third; abdomen almost elliptical, 
a little longer than the chest: knees, posterior shanks and posterior feet 
tawny; tips of posterior shanks pitchy: wings tawny; poisers yellow. 
Length of the body 1} line; of the wings 3} lines, 
Brazil. 
Genus TRYPETA, Meigen. 
TryYPETA ANTIQUA, Fem. 
Cinerea ; caput testaceum; abdomen apice nigrum, attenuatum ; pedes 
fulvi; ale albide, stigmate flavo maculisque transversis subfuseis. 
Ensina, Desv. Cinereous, clothed with short pale yellow hairs : head 
testaceous, whitish beneath, behind and along the borders of the eyes: 
mouth and feelers pale testaceous ; third joint of the feelers oblong, longer 
than the second, truncate and slightly retuse at the tip; sixth joint black, 
bare, very slender, tawny towards the base: abdomen attenuated, black and 
shining towards the tip: legs pale tawny : wings white, with a pale yellow 
brand at the tip of the first longitudinal vein, and with some indistinct very 
