DIPTERA. l'>9 



wards the tip with 2)ale tawny hairs; sixth segment ijeUinvish broicn, with a 

 yellow hind border ; seventh taivny ; tip and appendages ferruginous, shin- 

 ing, beset beneath with a few bhick bristles : legs back, beset with black 

 hairs and bristles ; shanks tawny, tvith black tips ; foot-cushions pitchy : 

 wings dark brown ; w ingribs and veins black ; angle of the vein between 

 the submarginal areolets much rounded, with no stump ; poisers pale yel- 

 low. Length of the body 9 lines ; of the wings 16 lines. 



South America. 



EuAX SriMicoN, Fem. 



Fcrrugincus, thoracis disco abdnmineque piceis, hujus segmentorum mar- 

 ginibus posticis fidvis, antennis fulvis apice nigris, pedibus ferrugi- 

 neis, alis limpidis. 



Head pale tawny, whitish and clothed with white hairs behind and 

 beneath, armed behind the eyes with a few black and tawny spines ; a few 

 white hairs and pale yellow bristles on each side of the crown ; face very 

 convex, beset with white hairs and pale yellow spines: eyes bronzed ; fore 

 part nearly flat, its facets larger than those elsewhere: sucker black, clothed 

 at the tip with short, pale tawny hairs ; palpi dark tawny, beset with long, 

 Idack bristles : feelers black ; first and second joints tawny, beset with short, 

 black and pale yellow bristles ; second much shorter than the first ; third 

 tawny at the base, tapering from near the base to the tip, as long as the 

 first; bristle a little- longer than the third joint: cliest and breast ferrugi- 

 nous, clothed here and there with a few short, black and hoary hairs ; disk 

 of the chest almost pitchy ; sides and scutcheon armed with a few black 

 spines ; breast with a hoary tinge: abdomen pitchy, about twice the length 

 of the chest, clothed with short black and hoary hairs, slightly tapering 

 from ihc base to the tip which is black and shining ; sides and hind borders 

 of the segments tawny ; first segment tawny, armed on each side with three 

 black spines : legs pale ferruginous, clothed with short hoary hairs, armed 

 with black spines ; knees black ; claws black, dark tawny at the base ; foot- 

 cushions pale tawny : wings colourless, rather short ; wing-ribs and veins 

 ferruginous, the latter black towards the tips ; angle of the vein between 

 the submarginal areolets very distinct, slightly obtuse, its stum]) much 

 more than twice the length of its inner side ; poisers pale lawny. J^ength 

 of the body 9 lines ; of the wings 13 lines. 



Colum1»ia. 



