464 LIST OF DIPTERA. 



Asilus Corissus, n. s., mas. Fuscus, thorace fulvo pubescente 

 vittisque quatuor fuscis ornato, abdominis apice fulvo fasciato, 

 antennis pedibusque nigris, tibiis fulvis apice nigris, alis nigro- 

 fuscis. 



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

 with golden down, beset behind the eyes with a row of black bristles, 

 thickly clothed beneath with white hairs ; sides of the crown beset 

 with black hairs ; clypeus very prominent, armed with long black bris- 

 tles : eyes bright copper-colour, especially on the fore part, which is 

 slightly convex, but its facets are much larger than those of the 

 other part ; lip black, clothed at the tip with short tawny hairs ; palpi 

 black, beset with long black hairs : feelers black ; first and second 

 joints beset with a few black hairs ; second joint a little more than 

 half the length of the first; third joint slender, about twice the 

 length of the second, tapering from the base to the tip ; bristle much 

 longer than the third joint ; chest and breast covered with dark taw- 

 ny down : chest beset on each side and behind with black bristles, 

 adorned with four dark brown stripes ; middle stripes linear and 

 narrow ; outer pair shorter and broader, connected with the sides by 

 two oblique tawny bands : abdomen tawny towards the tip, much 

 narrower than the chest, and rather more than twice its length, 

 slightly tapering from the base to the tip, clothed with hoary hairs, 

 which are longest and most thick towards the base ; sexual parts pi- 

 ceous, and clothed with black hairs ; the first and second segments 

 very short ; third and following segments successively decreasing 

 in length : legs black, clothed with black hairs, armed with black 

 spines; shanks bright tawny, with black tips, clothed with short 

 tawny hairs, as are also the feet on the under-side ; foot-cushions 

 piceous : wings very dark brown ; wing-ribs and veins black ; 

 poisers piceous. Length of the body 11 lines; of the wings 18 

 lines. 



Asilus Scaurus, n. s., mas. Canus, thoracis vittis quinque fuscis, ab- 

 domine fusco-fulvo, antennis nigris, pedibus f err ugineis, femori- 

 bus nigro vittatis, tarsis nigris, alis albidis. Allied to A. dorsi- 

 ger, Wied. Auss. Zweif. i. 436, 17. 



Head narrower than the chest, covered with white down, which 

 has a yellow tinge in some parts, clothed behind and beneath with 

 white hairs, beset behind the eyes with a few black bristles ; sides of 

 the crown clothed with white hairs; clypeus prominent, thickly 

 armed with long yellowish white bristles : eyes dark bronze ; fore 

 part flat, its facets a little larger than those of the other part : lip 

 black, clothed at the tip with short tawny hairs: palpi black, beset 



