DIPTHRA. 377 
black, bare, very slender: hips, knees, feet, hind-thighs at the base and fore- 
shanks tawny : wings colourless, black at the base along the fore borders, in- 
distinetly clouded at the tips; fore border black towards the tip; veins 
tawny ; fourth and fifth veins slightly converging; lower cross-vein slightly 
bent inward: poisers yellow. Length of the body 2 lines; of the wings 
34 lines. 
Brazil. 
Genus LAUXANTA, Latr. 
Lavxania pourra, Fem. 
Cyanea ; antenne fulve, articulo 30 supra piceo; abdomen lateribus 
viridibus, apice attenuato ; pedes picei, tarsis flavis ; ale subcinerea, 
ad costam subflavescentes. 
Dark blue, shining :-epistoma not prominent: mouth black: feelers 
tawny ; third joint almost spindle-shaped, somewhat pitchy above, full 
thrice the length of the second; sixth bare, black, slender, much longer 
than the third: abdomen tinged with green along each side, attenuated at the 
tip, a little longer than the chest: legs pitchy ; feet yellow: wings very pale 
gray, slightly yellow along the fore border ; veins pitchy, yellow along the 
fore border: poisers yellow, with pitchy knobs. Length of the body 14 
line ; of the wings 3 lines. 
Brazil. 
Lauxanta Inpistincta, Fem. 
Nigro-cyanea; antenne nigre ; pedes picei, tarsis basi fulvis ; ale lim- 
pide, bast et ad costam fulve. 
Bluish black ; feelers black ; third joint linear, slightly rounded at the 
tip, reaching a little beyond the epistoma, full thrice the length of the se- 
cond; sixth downy, much longer than the third: abdomen almost oval, a 
litle shorter and broader than the chest: legs pitchy ; feet tawny towards 
the base : wings colourless, tawny towards the base and along the fore bor- 
der ; lower cross-vein almost upright, very slightly bent inward: poisers 
black, tawny towards the base. Length of the body 2 lines; of the wings 
5 lines, 
Brazil. 
