DIPTERA. 241 
tawny; veins black, tawny at the base; poisers tawny. Length of the 
body 24 lines; of the wings 5} lines. 
Brazil. 
Syrpenus Lxnas, Mas. 
Niger, capite antico flavo, thorace vittis ferrugineis ornato, abdomine ni- 
gro-enco lateribus ferrugineis, antennis pedibusque fulvis, femoribus 
nigris, tibiis anterioribus tarsisque posticis piceo cinctis, tibiis posti- 
cis piceis, alis cinereis ad costam subfuscis. 
Black: head bright yellow in front, adorned with a metallic colour 
about the eyelets; hind part with a hoary covering, clothed with hoary 
hairs: eyes red; facets on the fore part of the crown rather larger than 
those elsewhere: sucker pitchy: feelers tawny; sixth joint black: chest 
and breast brassy green ; chest adorned with ferruginous stripes ; a yellow 
spot on each side of the breast : abdomen spindle-shaped, bronze-black, very 
much longer than the chest; sides ferruginous : legs tawny ; thighs black ; 
hind-shanks pitchy ; a pitchy band on each of the four anterior-shanks ; 
hind-feet pitchy at the base and at the tips: wings gray, pale brown along 
the fore border ; wing-ribs pitchy ; veins black, pitchy at the base ; brands 
brown: poisers tawny. Length of the body 2% lines; of the wings 5 
lines. 
Brazil. 
Syrpaus Sroto, Mas. 
Niger, capite antico flavo, scutello piceo, abdominis lateribus fulvis, an- 
tennis piceis, pedibus piceo-fulvis posticis nigris, alis nigro-cinerets. 
Head yellow, hind part tinged with gray, clothed with hoary hairs; 
crown and peristoma black ; crown thickly clothed with short black hairs : 
eyes red, slightly, bronzed: feelers pitchy: chest and breast black, tawny 
about the base of the wings, clothed with black hairs: breast tinged with 
gray: scutcheon pitchy : abdomen black, narrower and much longer than the 
chest, dark tawny along each side, thinly clothed with short black hairs, 
adorned with a tuft of tawny hairs on each side of the base: legs tawny, 
mostly pitchy above; hind-legs black; hind-feet long, tawny towards the 
base; wings blackish, gray towards the tips and along the hind border ; 
