LIST OF DIPTERA. 403 



the tip, clothed with white hairs, which are most frequent at the 

 base ; sides and hind borders of the segments and the whole of the 

 underside hoary ; first and second segments very short ; third and 

 following segments long, successively decreasing in length ; sexual 

 parts black, shining, very large : legs bright red, clothed with pale 

 yellow hairs, armed with black spines ; hips hoary ; thighs striped 

 with black; knees and tips of the shanks black; feet black, thickly 

 clothed beneath with ferruginous down ; claws black, red towards 

 the base ; foot-cushions tawny : wings light tawny, white along the 

 fore borders, till near the tips, which are gray ; wing-ribs piceous ; 

 veins black ; poisers tawny. Length of the body 14 lines ; of the 

 wings 22 lines. 



■ ? From Mr. Children's collection. 



Asilus Lades, n. s., fem. Niger, thoracis vittis quatuor ferrugineis, 

 abdomine cano maculis nigris, apice compresso nigro nitente, an- 

 tennis pedibusque nigris, alisfuscis. 



Body black : head a little narrower than the chest, clothed be- 

 hind and beneath with pale yellow hairs, beset behind the eyes with 

 black bristles ; crown thinly covered with black hairs ; clypeus very 

 prominent, thickly armed with black bristles and long pale yellow 

 hairs : eyes black ; fore part slightly convex, its facets very much 

 larger than those of the other part : lip black, clothed at the tip with 

 short tawny hairs ; palpi black, beset with black hairs and bristles ; 

 first and second joints of the feelers black, beset with short stout 

 black hairs; second joint about half the length of the first: chest 

 black, thinly clothed with black hairs, beset on each side and 

 behind with a few black bristles, adorned with four dark ferruginous 

 stripes, the two on each side joined together by an oblique band : 

 breast very dark ferruginous, partly clothed with black hairs : abdo- 

 men hoary, mucli narrower than the chest, and more than twice its 

 length, slightly tapering, and clothed with hoary hairs from the base 

 to near two-thirds of the length, and thence for a short space clothed 

 with black hairs, lastly black, shining, compressed, and very slender 

 to the tip ; each segment of the back is also black, with the excep- 

 tion of its sides and of its hind border ; first and second segments 

 very short ; second segment arched, armed with a row of black 

 bristles ; third and following segments long, successively decreasing 

 in length : legs black, clothed wtth black hairs, armed with black 

 spines ; foot-cushions dark tawny : wings brown, reaching when 

 closed, to about two-thirds of the length of the abdomen ; wing-ribs 

 and veins black ; poisers tawny, with piceous knobs. Length of the 

 body 12£ lines ; of the wings 16 lines. 



a. Brazil. From Mr. Mornay's collection. 



2N3 



