350 LIST OF DIPTERA. 



thinly clothed with short black hairs ; breast a little paler than the 

 chest : abdomen black, clothed with short black hairs, rather more 

 slender towards the base, narrower than the chest and very nearly 

 thrice its length ; segments from the first to the fourth ferrugi- 

 nous : legs ferruginous, covered with short black hairs; shanks beset 

 with a few bristles ; hips and feet piceous ; hind legs slender : 

 wings dark brown ; fore borders straight ; wing-ribs and veins pi- 

 ceous ; poisers tawny. Length of the body 5 — 6 lines ; of the 

 wings 7 — 10 lines. 

 a. ? 



Group XIII. 



Dasypogon Maricus, n. s., mas. Fulvus, thoracis vittis tribus nigris, 

 humeris ferrugineis, pectore cano, antennis pedibusque fulvis, 

 alis limpidis. 



Head tawny, covered with white down, nearly as broad as the 

 chest, clothed behind and beneath with white hairs ; clypeus and 

 front very thickly covered with long white bristles : lip black, 

 shining ; tongue ferruginous ; palpi black, hairy ; feelers tawny, 

 thinly clothed with short white hairs ; second joint cup-shaped, 

 much shorter than the first : eyes dark bronze ; fore part slightly 

 convex, its facets but little larger than those of the rest of the eye : 

 chest tawny, with a broad black stripe on the back, and a shorter 

 and more indistinct stripe on each side, clothed with very short black 

 hairs, and beset on each side and behind with yellowish white bris- 

 tles ; shoulders ferruginous : breast hoary and clothed with a few 

 white hairs : abdomen tawny, flat, tapering from the base to the tip, 

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

 with short white hairs and beset with one or two white spines on the 

 sides of the hind borders of each segment ; hind borders of the seg- 

 ments paler; tip ferruginous ; segments from the third successively 

 decreasing in length : legs tawny, clothed with short white hairs ; 

 hips hoary and beset with white bristles, of which there are also a 

 few on the tbighs, but more on the shanks and most on the feet ; 

 claws black, tawny at the base ; foot-cushions pale tawny : wings 

 colourless ; wing-ribs and veins ferruginous ; poisers yellow. Length 

 of the body 7 lines ; of the wings 10 lines. 



a. ? Presented by Captain Lord Byron. 



