LIST OF DIPTERA. 309 



Dasypogon afer, Wied. Auss. Zweif. i. 374, 13. Microstylum 



afrum, Macq. Dipt. Exot. i. 2, 27, 2. 

 a. South Africa. Presented by Dr. A. Smith. 



Dasypogon Blcesus, n. s., fem. Fulvus, thoracis disco nigro, lateri- 

 bus pectoreque ferrugineis, abdomine nigro maculis utrinque 

 ventreque ferrugineis, antennis pedibusque ferrugineis femoribus 

 supra tibiisque posticis dimidio apicali nigris, alis subfuscis, basi 

 margineque postico limpidis. 



Head tawny, nearly as broad as the chest, thickly clothed be- 

 hind with yellow hairs, and more thickly beneath with white hairs ; 

 crown thinly covered with tawny hairs ; front and clypeus adorned 

 with yellowish white down, the latter very thickly beset with yellow 

 bristles ; hypostoma ferruginous : eyes black, rather large ; fore part 

 flat, distinct from the other part, and with much larger facets : lip 

 black, thickly clothed at the tip with pale tawny hairs ; palpi bright 

 tawny, thickly beset with tawny hairs and bristles : first and second 

 joints of the feelers ferruginous, with piceous tips, of nearly equal 

 length, clothed with tawny hairs and bristles : chest dull pale ferru- 

 ginous, thinly clothed with short pale tawny hairs, and beset on each 

 side and behind with pale yellow spines ; disk mostly black ; sides 

 and breast ferruginous, with a slight hoary bloom, and clothed here 

 and there with white hairs : abdomen ferruginous, tapering from the 

 base to the tip, narrower than the chest and nearly thrice its length, 

 black above, excepting the sides of the hind borders of the segments ; 

 first and second segments short ; third and following segments long, 

 dotted with bands of little black punctures, successively decreasing 

 in length to the tip, which is armed with a circlet of black spines : 

 legs ferruginous, clothed with short pale yellow hairs and beset with 

 pale yellow spines ; feet also beset beneath with short black spines ; 

 thighs black above ; hind shanks black from the middle to the tips ; 

 claws black, tawny towards the base ; foot-cushions tawny : wings 

 light brown, mostly colourless at the base and along the hind bor- 

 ders ; wing-ribs and veins piceous ; poisers tawny, with piceous 

 knobs. Length of the body 12 lines ; of the wings 16 lines. 



a. South Africa. Presented by Dr. A. Smith. 



Dasypogon Saverrio, n. s. Fulvus, thoracis vittis quatuor piceis, ab- 

 domine nigro aut piceo maculis utrinque ventreque plerumque 

 ferrugineis, antennis pedibusque ferrugineis, femoribus supra et 

 metatibiis apice nigris, alis subfuscis basi limpidis. 



Head tawny, nearly as broad as the chest, thickly clothed be- 

 hind with yellow hairs and more thickly beneath with white hairs ; 



