LIST OF DIPTERA. 329 



tawny ; other characters like those of the preceding species. Length 

 of the body 8 lines; of the wings 14 lines. 



Dasypogon iEgon, n. s.,mas. Ferragineus, thorace piceo trivittato, 

 abdomine piceo, fasciis ferrugineis vittisque lateralibus fulvis, 

 antennis pedibusque fulvis, tarsis piceis, alis limpidis cinereo 

 variis. 



Body ferruginous : head as broad as the chest, bright tawny 

 above, black and clothed with some black hairs beneath the 

 eyes ; tubercle of the eyelets beset with two long black bristles ; cly- 

 peus armed with long yellowish white bristles ; hypostoma tawny, 

 shining, clothed with pale yellow hairs : eyes dark green ; fore part 

 quite flat, composed of large facets, and distinct from the other part : 

 lip dark ferruginous, black and clothed with short pale yellow hairs 

 towards the tip ; palpi and tongue tawny, the former clothed with 

 i yellow hairs : feelers tawny; first and second joints shining, clothed 

 with a few yellow hairs ; second joint beset with one or two bristles, 

 about twice the length of the first ; third joint spindle-shaped, a lit- 

 tle longer than the first and the second joints : chest with three 

 broad piceous stripes, thinly clothed with very short black hairs, be- 

 set on each side and behind with black bristles : abdomen piceous, 

 tapering from the base to the tip, narrower than the chest and about 

 twice its length ; sides of the segments with a pale tawny stripe, in- 

 creasing in breadth from the fore border to the hind border, which 

 is ferruginous ; some yellow bristles on each side of the second seg- 

 ment ; segments from the third to the sixth successively but slightly 

 decreasing in length ; seventh, eighth and ninth segments smaller, 

 shining : legs tawny, clothed with short black hairs, and beset with 

 black bristles, which are very short on the thighs and shanks, but 

 long on the tips of the latter and on the feet ; feet piceous at the 

 tips ; claws black ; foot-cushions tawny, yellow beneath ; tips of 

 fore shanks armed with a long black curved tooth, corresponding 

 with little black tubercles at the base of the feet: wings colourless, 

 I gray at the tips and thence along part of the hind border and on the 

 1 disks of some of the areolets in the middle of the wing ; wing-ribs 

 piceous : veins black, piceous towards the base ; the rudiment of a 

 I vein at the end of the areolet in the middle of the wing ; poisers 

 \ tawny. Length of the body 10 lines ; of the wings 16 lines. 



2 G 2 



