LIST OF DIPTERA. 337 



first and second joints of the feelers ferruginous, of equal length, 

 beset with short black hairs : chest and breast ferruginous, covered 

 with shining tawny down, and when this is effaced three broad pi- 

 ceous stripes appear on the back ; scutcheon tawny ; hind chest ra- 

 ther large ; sides of the chest beset with black hairs and bristles : 

 abdomen piceous, clothed with short black hairs, slightly shining, 

 linear towards the base, spindle-shaped towards the tip, narrower 

 than the chest, but not twice its length ; hind borders of the seg- 

 ments tawny, especially those of the third and fourth segments ; 

 first segment very short ; second segment also short, rather broad, 

 its sides beset with black hairs and bristles ; third segment long, 

 with a cross furrow near the base, which is dark ferruginous ; the 

 following segments successively decreasing in length ; the tip 

 clothed with a few short tawny hairs, and armed with some short 

 black spines : legs ferruginous, clothed with short black hairs; 

 shanks clothed with short tawny hairs and armed with some black 

 spines ; tips of foot-joints also armed with black spines ; first joint 

 clothed with tawny hairs ; claws black ; foot-cushions tawny ; fore 

 legs armed with a long black curved tooth at the tip of each shank, 

 and with a corresponding short blunt tawny tooth at the base of 

 each foot : wings bright tawny at the base and along the fore bor- 

 ders, much paler along the hind borders ; wing-ribs and veins fer- 

 ruginous ; poisers bright pale yellow. Length of the body 9 lines ; 

 of the wings 1 7 lines. 



Dasypogon Spinther, n. s. Ferrugineus, abdomine rufo, basi fas- 

 cidque nigris, apice ventreque ferrugineis, antennis pedibusque 

 ferrugineis, femoribus nigro-vittatis, alis fulvis, discis margini- 

 busque posticis subcinereis. 



Body ferruginous : head hardly as broad as the chest, clothed 

 more thickly than usual with tawny hairs : a piceous band on the 

 crown of the head across the eyelets : clypeus thickly beset with 

 tawny bristles : eyes bronze-black, divided as usual into two parts, 

 which are distinctly marked : lip black, short, thick, its tip clothed 

 with a few short yellow hairs : first and second joints of feelers fer- 

 ruginous, of equal length, clothed with tawny hairs : chest and 

 breast ferruginous, the latter and the sides of the former with large 

 patches of shining tawny down : abdomen slightly convex, hardly 

 narrower than the chest and rather less than twice its length, thinly 

 clothed with short yellow hairs ; first and second segments black ; 

 first segment very short ; second segment rather short, broad and 

 convex, with a red tubercle on each side, where it is beset with taw- 

 ny hairs and with a black spine ; third segment long, red, having 



