LIST OF DIPTERA. 449 



Asilus Isse, n. s., mas. Fusco-fulvus, thorace fasciculis flavis, pec- 

 tore cinereo-fulvo, abdomine subtus cano, antennis nigris, pedibus 

 piceis, tibiis ferrugineis, alis subcinereis. 



Body brownish tawny : head a little narrower than the chest, 

 clothed behind and beneath with pale yellow hairs, beset behind 

 with black bristles : crown covered with a few black hairs : front 

 and clypeus covered with yellow down ; clypeus thickly armed with 

 long pale yellow bristles, among which are a few long black hairs : 

 eyes dark bronze ; fore part nearly flat, its facets very little larger 

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

 hairs ; palpi black, beset with black bristles : feelers black : chest 

 thinly clothed with short whitish hairs, and beset with long black 

 bristles on each side and behind, where there is a short stripe of 

 tufts of yellow hair : breast grayish tawny : abdomen with a hoary 

 tinge on the under-side, tapering from the base to the tip, much 

 narrower than the chest and rather less than twice its length, clothed 

 with short white hairs ; segments from the third successively de- 

 creasing in length, each with some black punctures along the fore 

 border and with a few whitish bristles on each side of the hind bor- 

 der : legs piceous, stout, rather thickly clothed with yellowish white 

 hairs and beset with pale yellow spines : thighs thick ; shanks dark 

 ferruginous ; feet armed with piceous spines ; claws black ; foot- 

 cushions tawny : wings with a slight gray tinge, reaching when 

 clothed to three-fourths of the length of the abdomen ; wing-ribs 

 ferruginous ; veins black, ferruginous at the base and along the fore 

 borders ; poisers tawny. Length of the body 7\ lines ; of the wings 

 10 lines. 

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



Asilus Abuntius, n. s., fern. Cinereo-niger, thorace fills nigris 

 hirto, pectore fulvo, abdomine pilis albis vestito, antennis nigris, 

 pedibus cinereo-nigris, alis limpidis, venis transversis Jlavo-fusco 

 subnebulosis. 



Body grayish black: head narrower than the chest, clothed 



behind and beneath with yellowish white hairs, beset behind with 



black bristles, thinly clothed on the crown with black hairs, adorned 



with a stripe of yellow down on each side of the front ; clypeus 



j thickly beset with golden hairs : eyes brassy ; fore part slightly con- 



\ vex, its facets a little larger than those of the other part : lip and 



I palpi black, the latter beset with black hairs : feelers black ; first and 



| second joints clothed with black hairs; second joint club-shaped, 



' shorter than the first; third joint spindle-shaped, longer than the 



.' first and the second joints : chest thickly clothed with short black 



hairs and beset on each side with black bristles : breast dull tawny, 



2r2 



