328 



LIST OF DIPTERA. 



third segment long, having a cross furrow, which with a row of nu- 

 merous black punctures accompanies a whitish band like those on 

 the hind borders ; the following segments successively decreasing 

 in length ; a row of black punctures on the fore borders of the 

 fourth segment ; under-side tawny, slightly shining, not hairy, fur- 

 rowed with very small cross-lines : legs tawny, covered with short 

 black hairs ; thighs beset with two or three spines ; these are more 

 numerous on the shanks and on the feet; foot-joints from the first to 

 the third with ferruginous tips ; fourth and fifth joints ferruginous, 

 with piceous tips ; claws black ; foot-cushions yellow ; fore legs armed 

 with a long curved black tooth at the tip of each shank, and with 

 numerous corresponding little black tubercles at the base of the foot: 

 wings tawny ; wing-ribs and veins ferruginous, the latter piceous 

 towards the tips ; poisers dark tawny. Length of the body 11 lines ; 

 of the wings 20 lines. 



• 



Dasypogon Cerretanus, n. s. Fulvus, thorace vittus tribus piceis fer- 

 rugineo limbatis, abdomine ferrugineo, segmentis nigro maculatis 

 fulvoque fasciatis, antennis fulvis , apice f err ugineis, pedibus ful- 

 vis, alis limpidis apice subcinereis. 



Body dull : head as broad as the chest, clothed with thick shin- 

 ing down that appears tawny or whitish, according to the light in 

 which it is seen: a fringe of yellow bristles along the rims of 

 the eyes behind ; under-side clothed with yellow hairs ; two long 

 black bristles on the tubercle of the eyelets : clypeus armed with 

 nearly twenty long white spines : eyes bluish black, divided as usual 

 into two parts, which are distinctly marked : lip ferruginous with 

 black tip : neck short, furrowed as usual, and beset with yellow 

 bristles : chest and breast resembling those of the preceding spe- 

 cies, but the piceous colour is more distinct : hind chest and scutch- 

 eon covered with shining yellow down, the latter armed with two 

 long black bristles : abdomen ferruginous, decreasing in breadth 

 from the base to the tip, narrower than the chest and full twice its 

 length, clothed w T ith very short yellow hairs, shining, and furnished 

 with some longer tawny hairs towards the tip, which is armed with 

 short black spines ; a large black spot on each side of every seg- 

 ment, whose hind border is occupied by a tawny band which widens 

 on each side into a triangular spot ; second segment beset on each 

 side with a cluster of yellow hairs and bristles ; no punctures on the 

 fore border of the fourth segment : legs tawny, clothed with short 

 black hairs, armed with black spines ; feet piceous towards the tips ; 

 claws black; foot-cushions tawny: wings colourless, slightly gray 

 on the disks of the areolets, and more so at the tips ; poisers bright 



