.4 Monogra ph o/ Égyptian Diptera. 97 



the proboscis and with some mimite, bristly luvirs; i.orA, three of 

 whieh beiiig more devcloped than the two ",v. or. and the fourth is 

 nuieh weaker and situated at the base of the antennae ; ail the ce- 

 l)halic bristles are pale yellowish, except the lower s. or. and the 

 three mueh larger i.or. blatkish: the iipper s. or. are lient upwards 

 and outwards. 



Thorax, scutellum and mesophragma entirely black, but clothed 

 with a dense yellowish-grey or soraetimes cinereous, tomentum ; the 

 pubesceuee ou the dise eonsists of rather thick, adpressed, pale yel- 

 low hairs and along the front border, especially ou the humeri, it is 

 often longer and decidedly bristly; ail the bristles on the pleurae are 

 short and pale yellow Init on the dise they are brownish at the apex 

 and inserted on small blaekish dots; the pt. is stronger than the vipL 

 and the st. even stronger; scutellum with two h. se. only, which are 

 long, parallel, or convergent, and placed rather distant from the 

 base. 



Abdomen short, broad. entirely yellowish or greyish-yellow and 

 without auy bristles except at the aj^ex of the maie usually with a 

 row of longi.sh bristly hairs; the pubesceuee is similar to that of the 

 thorax, but somewhat less dense and longer at the apex of the first 

 segment on the sides; maie hypopygium sm.all, rounded, dark yellow- 

 ish-grey; female ovipositor almost as long as the three apical seg- 

 ments of the abdomen together, flat, conical and very shining blacl<. 



Legs entirely yellow and rather bare; front femora with a row 

 of four blaekish bristles beneath and a row of much weaker vellowish 

 bristles on the side and above. 



Wings with a black wing pattern, radiatiug at the apex and 

 hiud border, with more thau the basai third entirely hyaline; the 

 black patch extends, from the base of the stigma, leaving the base of 

 RI cell hyaline, covering less than the apical half of R cell, and 

 leaving the basai third of Ist M2 cell, 2nd. A cell and the axillary 

 lobe hyaline; the dark patch conta ins some hyaline spots which ou 

 the front and hiud margins appear like small indeutatious, and at 

 the apex like deeper indeutatious or rays; in addition there are three 

 rounded hyaline spots, or drops, not touching the wing margin, one 

 in the basai third of R5 cell almost touching Ml, one in Ist M2 cell 

 below the radio-median cross-vein, aud the third, which is the largest 

 and elliptical in 2ud M2 cell near the médian cross-vein; the mar- 

 ginal spots or indeutatious are : one in R 1 cell ; oblique, touching 

 the apex of the stigma aud extending down to R2-f3; one smaller 

 spot near the apex of R3 cell, touching the tip of R2-f 3; three at 

 the apex, one at the tip of R3 cell with its pointed apex extending 

 a little over R4 + 5, one completely covering the tip of R5 cell, and 

 one at the apex of 2nd M2 cell, extending a little over Ml ; an ellip- 

 tical spot, and two spots in the apical third of Cul cell, which are 



Mémoires de la Soc. Roy. Ent. d'Egypte 7 



