316 LIST OF DIPTERA. 



Group V. 



Dasypogon Digentia, n. s., mas. et fern. Niger, thorace vittis dua- 

 bus aureis, pectore cinereo, abdominis apice ferrugineo, antennis 

 pedibusque nigris, femoribus apice tibiisque rufis, alis antice 

 subfulvis postice subcinereis. 



Male. — Body black : head not so broad as the chest, clothed 

 with a few black hairs on the crown, with thick long pale yel- 

 low hairs behind and beneath, and with long bright tawny hairs on 

 the front and on the clypeus : eyes purplish black, flat, and with 

 larger facets in front, but the difference in size of the facets is not 

 so great as in some other species, nor is the boundary-line so clearly 

 defined ; lip black, short, and very stout, its tip clothed with short 

 pale yellow hairs ; palpi black, very thickly clothed with long black 

 hairs and bristles : feelers black ; first and second joints clothed 

 with black hairs ; second joint much shorter than the first ; third 

 joint tapering from the base to the tip, longer than the first and the 

 second ; fourth joint very small : chest clothed with short black 

 hairs, and adorned with a stripe of golden down on each side, which 

 is beset with long pale yellow hairs and tawny bristles : breast gray, 

 and thickly clothed with long pale yellow hairs: abdomen com- 

 pressed, except at the base and at the tip, shining, crossed by nu- 

 merous little furrows, clothed with short yellow hairs, and beneath 

 also with longer and paler hairs, much narrower than the chest and 

 more than twice its length ; first and second segments short, thinly 

 clothed with long pale hairs ; third segment long ; the following 

 segments successively decreasing in length ; tip ferruginous : legs 

 black, clothed with black hairs ; hips and thighs clothed also with 

 long pale hairs ; shanks and feet beset with black bristles, and the 

 former also with some longer tawny bristles ; tips of thighs and 

 shanks, excepting their tips, red ; fore legs unarmed ; fore shanks 

 clothed on their inner side with golden down : wings with a slight 

 tawny tinge on the fore border, and with a slight gray tinge on the 

 hind border ; the disk almost colourless ; wing-ribs and veins ferru- 

 ginous, the latter piceous towards the tips ; poisers of the male taw- 

 ny, of the female piceous. Fern. — Abdomen rather shorter than 

 that of the male, of equal breadth along the whole length, armed 

 with a circlet of black spines at the the tip : hind thighs more slen- 

 der than those of the male. Length of the body 10—11 lines; of 

 the wings 16 — 18 lines. 



a. New Holland. Presented by the Haslar Hospital. 



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



