LIST OF DIPTERA. 447 



hoary hairs and with one or two white bristles ; third and following 

 joints long, successively decreasing in length ; tip compressed, black 

 and shining ; hind borders of the segments and under-side gray : 

 legs gray, clothed with very short pale yellow hairs, armed with 

 black spines ; hips and thighs black ; tips of the thighs tawny ; tips 

 of shanks and of feet black ; claws black, reddish tawny at the base ; 

 foot-cushions tawny : wings slightly tawny, gray at the tips and 

 along the hind borders ; wing-ribs ferrruginous ; veins black, ferru- 

 ginous at the base ; poisers tawny. Length of the body 7 lines ; of 

 the wings 10 lines. 



Asilus Amazaenes, n. s., fern. Cinereus, pectore cano, antennis ni- 

 gris, pedibus cinereis, tibiis tarsisque nigro-fulvis, alis limpidis. 



Body black : head narrower than the chest, clothed behind and 

 beneath with white hairs and on the crown with a few black hairs ; 

 front and clypeus very thickly covered with long pale yellow hairs : 

 eyes very dark bronze ; fore part slightly convex, its facets hardly 

 larger than those of the other part : lip and palpi black, the latter 

 beset with black bristles : first and second joints of the feelers black, 

 beset with short black hairs; second joint much shorter than the 

 first : chest gray, clothed with short black hairs, and having some 

 white hairs and black bristles on each side : breast hoary, thinly 

 clothed with white hairs : abdomen gray, tapering from the base to 

 the tip, narrower than the chest and about twice its length, clothed 

 with white hairs, which form a cluster on each side at the base ; 

 segments from the third very slightly decreasing in length : legs 

 black, covered with a gray bloom and clothed with white hairs ; 

 thighs armed with some yellow spines ; shanks and feet with a dark 

 tawny tinge, beset with black and pale yellow spines ; claws black ; 

 foot-cushions tawny : wings colourless, when closed not reaching 

 the tip of the abdomen ; wing-ribs and veins piceous ; poisers dark 

 tawny. Length of the body 8 lines ; of the wings 11 lines. 



a. South Africa. Presented by Dr. A. Smith. 



Asilus Aphellas, n. s., mas. Cinereus, pectore abdomineque cams, 

 antennis nigris, pedibus cinereis, tibiis ferrugineis, tarsis piceis, 

 alis limpidis. 



Head brown, narrower than the chest, clothed behind and be- 

 neath with white hairs, and having a few black hairs on the crown ; 

 front and clypeus most thickly clothed with long yellowish white 

 hairs : eyes dark bronze ; fore part slightly convex, its facets not 

 much larger than elsewhere : lip and palpi black, the latter beset 



PART II. 2R 



