LIST OF DIPTERA. 395 



each side with a long black bristle and with long hoary hairs ; third 

 and following segments long, successively decreasing in length ; tip 

 black : legs ferruginous, stout, clothed with white hairs and armed 

 with black spines, which are longest on the feet ; hips dull gray ; 

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

 whitish or with a very slight tawny tinge, reaching when closed 

 nearly to the tip of the abdomen ; wing-ribs and veins tawny, the 

 latter piceous towards the borders ; poisers tawny. Fern, — Abdomen 

 nearly twice the length of the chest, spindle-shaped till near the tip, 

 where it is compressed ; disks of the segments brown towards the 

 fore borders, where they are clothed with black hairs, while the 

 longer white hairs cover the hind borders ; tip black : wings colour- 

 less ; veins darker than those of the male. Length of the body 

 6 — 9§ lines ; of the wings 10 — 14 lines. 



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



Asilus Scilurus, n. s., fem. Fuscus, capite albo, thoracis vittis tri- 

 bus nigro-fuscis, abdominis segmentis cano fasciatis, antennis 

 nigris,pedibus piceis, tibiis ferrugineis, alis subfulvis. 



Body brown : head white, narrower than the chest, darker on 

 the crown, where it is furnished with a few black hairs, thickly 

 clothed behind, in front and beneath with white hairs ; clypeus 

 armed with white bristles : eyes dark bronze ; fore part nearly flat, 

 not very distinct from the other part, but with rather larger facets : 

 lip black, shining, clothed at the tip with yellow hairs ; first and 

 second joints of the feelers black, beset with black bristles ; second 

 joint much shorter than the first : chest brown, with three indistinct 

 dark brown stripes, clothed with short black hairs, beset on each 

 side and behind with black bristles, — covered also on the fore bor- 

 der, on the front of each side and partly behind with white hairs : 

 breast pale brown : abdomen brown, tapering from the base to the 

 tip, clothed with long hoary hairs, much narrower than the chest 

 and less than twice its length ; hind borders of the segments hoary ; 

 segments from the third successively decreasing in length : legs pi- 

 ceous, clothed with white hairs and beset with black spines ; shanks 

 dark ferruginous ; claws black ; foot-cushions dull tawny : wings 

 very light brown ; wing-ribs piceous ; veins black, piceous towards 

 the base ; poisers tawny. Length of the body 9 lines ; of the wings 

 15 lines, 

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



