LIST OF DIPTERA. 319 



stripe along each side, clothed with long pale yellow hairs, as is also 

 the under-side, which is grayish tawny ; second segment convex as 

 usual ; third and following segments long, but successively decreas- 

 ing in length ; ninth segment short, and 'armed with a circlet 

 of black spines : legs bright red, clothed with short pale yellow 

 hairs ; hips, thighs at the base, tips of the shanks and feet black ; 

 hips and thighs clothed with long pale yellow hairs ; tips of the lat- 

 ter armed with a very few short spines ; shanks armed with more 

 and longer black and tawny spines ; feet more thickly beset with 

 short stout spines ; claws black ; foot-cushions tawny : wings pale 

 gray, or almost colourless, with a very slight tawny tinge towards 

 the base ; wing-ribs ferruginous ; veins piceous, ferruginous at the 

 base, black at the tips ; poisers tawny. Length of the body 8 lines ; 

 of the wings 12 lines. 



a. Van Dieman's Land. Presented by the Eev. Augustus Beau- 



fort. 



b. Van Dieman's Land. Presented by R. Butler, Esq. 



Dasypogon Agathyllus, n. s. Niger, pilis flavis fulvisque vestitus, 

 humeris abdominisque apice ferrugineis, antennis pedibusque 

 ferrugineis, femoribus tibiisque posticis piceis, alls fulvis albo 

 unifasciatis. 



Body black: head much narrower than the chest, thickly 

 clothed behind and beneath with yellow hairs, and there are some 

 also on the sides of the front ; clypeus thickly beset with long pale 

 yellow bristles : eyes black ; fore part slightly convex, its facets a 

 little larger than those of the other part : lip black, clothed at the 

 tip with short tawny hairs : first and second joints of the feelers fer- 

 ruginous, of nearly equal length, clothed with yellow hairs : neck 

 with a ruff of yellow bristles : chest clothed with yellow hairs, and 

 beset on each side and behind with long yellow bristles ; shoulders 

 ferruginous : breast partly clothed with yellow hairs : abdomen 

 narrower than the chest, and rather more than twice its length, 

 clothed with tawny hairs, tapering from the base to the tip, which 

 is ferruginous ; first and second segments short ; third and follow- 

 ing segments long, but successively decreasing in length : legs fer- 

 ruginous, clothed with yellow hairs, and beset with pale yellow 

 bristles ; hind thighs piceous, ferruginous on the under-side from 

 the base to the middle ; hind shanks piceous, ferruginous at the 

 base ; claws black, ferruginous at the base ; foot-cushions ferrugi- 

 nous : wings tawny, with a colourless streak below the fore border 

 from the base to the middle ; wiug-ribs, veins, and poisers ferrugi- 

 nous. Length of the body 12 lines ; of the wings 18 lines. 



a. ? Presented by Captain Lord Byron. 



2f3 



