LIST OF D1PTERA. 427 



being very convex ; wing-ribs and veins black ; poisers tawny. 

 Length of the body 2^ lines ; of the wings 14 lines. 



a. Ceylon. From the Kev. J. Wenham's collection. 



Asilus Baletus, n. s. mas. Fuscus, thoracis vittis tribus lateribus 

 pectoreque fulvis, abdominis segmentorum marginibus posticis 

 lateribus ventreque fulvis, apice nigro, antennis nigris, pedibus 

 rufis nigro-variis, alis flavo-fuscis. 



Body dark brown : head as broad as the chest, covered with 

 pale yellow down, clothed with a few whitish and black bristles be- 

 hind, and more thickly beneath with white hairs ; crown beset with 

 some black hairs on each side ; clypeus rather prominent, thickly be- 

 set with long pale yellow bristles, and also armed on the hinder part 

 with a few black bristles : eyes dark bronze ; a small surface of the 

 fore part flat, and composed of much larger facets than those of the 

 other part : lip black, clothed at the tip with short yellow hairs ; 

 palpi black, clothed with long black hairs : feelers black ; first and 

 second joints beset with short black bristles ; second joint hardly 

 half the length of the first; third joint spindle-shaped, a little longer 

 than the second ; bristle slender, as long as all the preceding joints: 

 chest thickly clothed with black hairs of various length, beset 

 on each side and behind with black bristles, adorned with three taw- 

 ny stripes ; side stripes widened in front and behind, and also con- 

 nected with the sides of the chest by four oblique tawny bands ; 

 fore chest, hind chest, sides of the chest, and breast tawny, the latter 

 with a hoary tinge : abdomen dull tawny, much narrower than the 

 chest, and full twice its length, thinly clothed with whitish hairs ; its 

 back brown, with the exception of the sides and of the hind borders 

 of the segments ; first and second segments short ; third and follow- 

 ing segments long, successively decreasing in length to the tip, 

 which is black and shining : legs pale red, clothed with short black 

 hairs, armed with a few black spines ; hips tawny ; feet black, red 

 at the base; foot-cushions tawny; shanks paler than the thighs,; 

 streaks on the hind thighs, tips of the four hinder thighs, tips of the 

 hind shanks, and hind feet black : wings yellowish brown ; wing- 

 ribs and veins black ; poisers tawny. Length of the body 1\ lines ; 

 of the wings 1 1 lines. 



a. Venezuela. From Mr. Dyson's collection. 



2 P 3 



