312 LIST OF DIPTERA. 



Dasypogon Scheno, n. s., mas. Fulvus, thoracis vittis quatuor ob- 

 scuris, pectore ferrugineo, abdomine nigro fasciis apice ventreque 

 ferrugineis, antennis ferrugineis apice piceis, pedibus ferrugi- 

 neis, femoribus tibiisque posticis et tarsis piceis, alis albis venis 

 fusco limbatis. 



Body very light tawny : head much narrower than the chest, 

 thickly clothed with pale yellow hairs ; crown of the head piceous ; 

 clypeus armed with a thick cluster of yellowish white bristles : eyes 

 black ; fore part very slightly convex, not very distinct from the 

 other part, but composed of rather larger facets : lip black, shining, 

 clothed at the base with long — at the tip with short — pale yellow 

 hairs ; palpi ferruginous, clothed with long yellowish white hairs ; 

 feelers ferruginous ; first and second joints clothed with pale yellow 

 hairs, which are mostly on the first joint ; second joint cup-shaped, 

 piceous at the tip, much shorter than the first; third joint nearly 

 linear, but rather narrower at each end, piceous towards the base, 

 almost as long as the first and the second joints ; fourth and fifth 

 joints almost like a bristle, hardly half the length of the third : chest 

 clothed with short yellow hairs, thickly beset on each side and be- 

 hind with long pale yellow bristles, adorned with four dark stripes, 

 which are very close to each other : breast mostly ferruginous : ab- 

 domen black, crossed by numerous little furrows, tapering from the 

 base to the tip, clothed with short pale yellow hairs, more than twice 

 the length of the chest ; hind borders of the segments, tip and under- 

 side ferruginous ; segments from the third to the sixth of nearly 

 equal length ; seventh segment a little shorter than the sixth ; eighth 

 segment much shorter than the seventh ; ninth segment ferruginous, 

 as long as the eighth : legs ferruginous, clothed with yellowish white 

 hairs, and rather thickly beset with yellowish white spines ; feet, 

 hind thighs and hind shanks mostly piceous ; claws black, ferrugi- 

 nous at the base ; foot-cushions tawny : wings white, pale brown 

 along the borders of the veins ; wing-ribs piceous ; veins black, pi- 

 ceous at the base ; poisers tawny. Length of the body 13 lines ; of 

 the wings 20 lines. 



a. Tunis. From Mr. Fraser's collection. 



Dasypogon Antigenes, n. s. Flavo-fuscus, capite fulvo, thoracis la- 

 teribus pectoreque rufis, abdomine piceo, maculis utrinque ven- 

 treque rufis, antennis ferrugineis, pedibus ferrugineis, alis albidis 

 marginibus anticis fulvis apicibus subfuscis. 



Body yellowish brown : head tawny, narrower than the chest, 

 covered with white down, clothed behind and beneath with white 

 hairs, beset behind the eyes with tawny bristles ; crown dark 



