320 LIST OF DlPTERA. 



Dasypogon Pedanus, n. s., fern, Fuscus, capite pectore thoracis 

 vittis duabus, scutello et metathorace albis, abdominis fasciis 

 ventreque canis, antennis pedibusque nigris, alis limpidis apice 

 subfuscis. 



Head white, narrower than the chest, clothed with white hairs, 

 which are very thick beneath ; crown piceous, beset with tawny 

 bristles ; clypeus thickly armed with long white bristles : eyes dark 

 bronze ; fore part flat, with larger facets, distinguishable from the 

 other part, though the difference of the size of the facets is nut so 

 great as in some other species ; lip black, short, its tip clothed with 

 tawny hairs : feelers black ; first and second joints clothed with 

 white hairs ; second joint not half the length of the first ; third joint 

 spindle-shaped, tawny at the base, as long as the first and the se- 

 cond joints : chest brown, with a white stripe on each side, beset 

 with some long pale yellow hairs and bristles on the sides and about 

 the hind border ; shoulders ferruginous ; breast white and thinly 

 clothed with white hairs ; scutcheon and hind chest also white, and 

 the latter with a tuft of long white hairs on each side : abdomen 

 brown, decreasing in breadth from the base to the tip, narrower than 

 the chest and more than twice its length, thinly clothed with short 

 white hairs, thickly crossed with little furrows, shining towards the 

 tip, which is armed with short black spines ; hind borders of the 

 segments and under-side hoary ; a tuft of long white hairs on each 

 side of the base : legs black, thickly covered with short white hairs ; 

 hips hoary ; thighs, shanks and feet armed with yellow spines, which 

 are most frequent on the latter; claws black, tawny at the base; 

 foot-cushions tawny ; shanks ferruginous, wirh black tips : wings 

 colourless, slightly tinged with pale brown at the tips, the disks of 

 whose areolets are nearly colourless ; wing-ribs tawny ; veins pi- 

 ceous, black towards the tips ; poisers tawny. Length of the body 

 8 lines ; of the wings 10 lines. 



a. Swan River. Presented by Sir J. Richardson. 



Dasypogon Nicoteles, n. s. Cinereus, capite cano, thorace piceo 

 univittato, abdominis apice nigro, antennis tarsisque nigris, fe- 

 moribus purpureo-cupreis, tibiis ferrugineis apice nigris, alis 

 limpidis apice subcinereis. 



Body gray : head hoary, a little narrower than the chest, 

 thickly clothed above, behind and beneath with hoary hairs ; cly- 

 peus thickly beset with long black bristles : eyes piceous ; fore part 

 slightly convex, dark bronze, its facets a little larger than those 

 elsewhere on the eye : lip black, elothed at the tip with tawny hairs ; 

 palpi black, beset with black bristles : feelers black ; first and second 

 joints beset with black hairs, nearly equal in length ; third joint 



