338 LIST OF DIPTEEA. 



along the fore border a black band, whose hind border is interrupted 

 by a semicircular inlet of the red ; fourth segment red, black on the 

 fore border, a little shorter than the third ; fifth segment deep vel- 

 vet-like black, a little longer than the third ; sixth segment ferrugi- 

 nous, black on the fore border ; seventh segment tawny; under-side 

 ferruginous, shining ; each segment with three black spots, the mid- 

 dle one behind the other two, but hardly separate from them : legs 

 ferruginous, thinly clothed with tawny hairs ; a black stripe on each 

 thigh ; shanks and feet beset with a few black spines ; claws black ; 

 foot-cushions tawny ; fore legs armed with a long black curved tooth 

 at the tip of each shank, and with numerous little corresponding 

 black tubercles at the base of each foot : wings tawny, colourless, or 

 with a slight gray tinge on the disks and from thence to the hind 

 borders ; wing-ribs ferruginous ; veins partly ferruginous, partly pi- 

 ceous ; poisers tawny, with yellow knobs. Length of the body 8 

 lines ; of the wings 16 lines. 



a. West Australia. From Mr. Clifton's collection. 



Group X. 



Dasypogon castaneus, Macq. Dipt. Exot. i. 2, 35, 6. 

 a. - ? 



Dasypogon brunneus ? Fabr. Syst. And. 165, 9. Wied. Dipt. 

 Exot. i. 219, 9. Auss. Zweif. i. 382, 26. Asilus brunneus, 

 Fabr. Mant. Ins. ii. 359, 20. Ent. Syst. iv. 382, 28. 



a. Brazil. From Mrs. Mornay's collection. 



Dasypogon Alcippe, n. s., mas. Fulvo-fuscus, thorace fusco trivit- 

 tato, lateribus albis, abdomine nigro maculis fulvis, antennis pe- 

 dibusque fulvis, tibiis tarsorumque articulis apice piceis, alts sub- 

 fulvis. 



Head brown, hardly broader than the chest, covered — especially 

 above and on the front — with thick shining white down, clothed be- 

 hind and beneath with black hairs, and with a few of the same on 

 the tubercle of the eyelets and above the feelers, having also four 

 long shining white bristles and a few black hairs on the clypeus : 

 lip black, not longer than the head, clothed at the tip with short 

 pale yellow hairs : eyes divided into two spaces ; the inner space, or 

 that part of the eye by which the fly sees before it, is blue, flat, and 

 composed of large facets, which successively decrease as they diverge 

 towards the outer part, which is convex, composed of small facets of 

 equal size, and is larger than the inner part, which it half encircles : 

 feelers tawny ; first and second joints beset with black hairs ; second 



