708 



ASILID^ 



8 (9) Fourth posterior cell closed (fig. 373) ; wing-membrane ribbed. 



Fig. 373.— Selidopogo7i diadema 9 . x 6. 



Scutellum with four or more strong marginal bristles. Bristles on 

 the collar strong, but the ocellar bristles weak ; metapleural fan strong, 

 Squamse with a rather long fringe on the lower part, 



Selidopogon. 

 9 (8) Fourth posterior cell open (fig. 374) ; wing-membrane wrinkled. 



Fig. 374. — Dasypogon teittonus ?. x 6. 



Scutellum (in European species) Avithout any marginal bristles. 

 Dorso-central bristles near the scutellum present though small ; ocellar 

 bristles strong; metapleural fan weak and accompanied with 

 pubescence. Femora with small bristles. Squamae rather large, with 

 a neat short even fringe. 



Dasypogon. 



10 (1) Front tibise without a terminal claw. 



11 (12) Second posterior cell (6*) pushed up almost entirely into the lower 



outer part of the first posterior (fig. 375). 



Fig. 375. — Mii.roUi,lum Jlaoivuitris $. x 4^. 



Third veinlet from the discal cell very recurrent so that it runs 

 back for a long distance abuost parallel with the wingmargin and 

 closes the fourth posterior cell, with the result that the amount of 

 wingmargin occupied by the third posterior cell is nearly three times 

 as much as that occupied by the second ; small cross-vein almost or 

 quite absent. Style absent. Thoracic bristles numerous, Alulie 

 large. Large flies. 



N.B. — The genus MegcqjoUijon of Walker may be distinct ; Walker 



