424 LIST OF DIPTERA. 



not very distinct from the other part, but its facets are a little larger ; 

 lip black, shining, clothed at the base with long pale yellow hairs, at 

 the tip with short yellow hairs ; palpi black, clothed with black bris- 

 tles : feelers black ; first and second joints beset with black hairs 

 and bristles ; second joint a little shorter than the first ; third joint 

 spindle-shaped, altttle shorter than the first and the second ; fourth 

 and fifth joints like a bristle, rather longer than the third: chest 

 with four dark brown stripes ; middle pair the longest and most re- 

 gular ; breast hoary, with a few pale yellow hairs : abdomen flat, 

 red, tapering from the base to the tip, clothed with pale yellow hairs, 

 narrower than the chest and about twice its length ; segments from 

 the third to the sixth long, and nearly equal in length ; seventh and 

 eighth segments shorter; ninth segment black, shining: legs red, 

 clothed with short whitish hairs, and armed with some black bristles ; 

 hips hoary ; knees, feet, and claws black ; foot-cushions tawny : 

 wings pale gray, darker towards the tips ; wing-ribs piceous ; veins 

 black; poisers yellow. Length of the body 10 — 11 lines; of the 

 wings 16 — 18 lines. 



a. New Holland. Presented by J. Hunter, Esq* 



b. ? 



Asilus Maso, n. s., fem. Niger, thorace aureo pubescente nigro qua- 

 drivittato, scutello metathorace pectoreque canis, abdomine rufo 

 basi cinereo apice nigro, antennis nigris, pedibus rufis, tarsis ni- 

 gris, alls fulvis. 



Head black, narrower than the chest, covered with pale yellow 

 down, clothed behind and more thickly beneath with pale yellow 

 hairs, beset behind the eyes with a row of black bristles ; tubercle of 

 the eyelets and sides of the crown beset with black hairs ; clypeus 

 prominent, armed with black hairs and with longer white bristles : 

 eyes dark bronze ; fore part nearly flat, its facets larger than those 

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

 hairs ; palpi black, beset with black hairs : feelers black, covered 

 with a gray bloom ; first and second joints thickly beset with short 

 stout black hairs ; second joint club-shaped, full half the length of 

 the first; third joint slightly tapering from near the base to 

 the tip, a little longer than the first ; bristle shorter than the 

 third joint: ridge of the fore chest clothed with long pale yellow 

 hairs, and beset with black bristles: chest covered with golden 

 down, thinly clothed with short black hairs, beset on each side 

 and behind with a few black bristles, adorned with four black 

 stripes ; middle stripes narrow, slightly tapering from the fore bor- 

 der till near the hind border, where they unite to finish their course ; 

 side stripes shorter and broader, each of them interrupted by two ob- 



