LIST OF DIPTERA. 339 



joint a little longer than the first, covered with long black bristles : 

 fore chest brown, covered on the hinder part with a white bloom : chest 

 yellowish brown, with three broad rich brown stripes in the middle, 

 and a brilliant white stripe on each side, where there are two or 

 three long white spines ; the middle brown stripe is shorter than the 

 side stripes, and does not reach the scutcheon, which is rich brown 

 and has a tawny hind border covered with white bloom : breast 

 hoary, with a tawny oblique band on each side : abdomen cylin- 

 drical, black, shining, clothed with short black hairs, much narrower 

 than the chest and much more than twice its length ; first segment 

 very short, tawny at the base ; second segment semicircular, gibbous 

 in the middle, tawny on each side ; third segment long, tawny, with 

 a long triangular black spot, whose tip approaches the fore border, 

 which is yellowish ; fourth segment tawny on each side, longer than 

 the third ; fifth and three following segments covered with a hoary 

 bloom ; seventh and eighth short, piceous ; tip of the abdomen armed 

 with short tawny spines ; under-side dull black, excepting the seg- 

 ments from the first to the fourth, which are dull tawny : legs tawny, 

 clothed with short black hairs ; tips of shanks and oi the joints of 

 the feet piceous ; hips covered with a hoary bloom ; thighs with a 

 few yellow spines ; shanks with more and longer spines, and these 

 are still more frequent on the feet, where the black hairs are also 

 more abundant; claws black, tawny at the base; foot-cushions yellow : 

 wings tawny, especially at the base and along the borders of the 

 veins ; disks of the areolets mostly colourless ; wing-ribs and veins 

 tawny, the latter piceous on the fore borders ; poisers tawny. 

 Length of the body 10 lines ; of the wings 18 lines. 



a. Port Natal. From Dr. Krauss's collection. 



Dasypogon Herennius, n. s., fern. Rufo-fuscus, capile fulvo, tho- 

 race vittis tribus nigris, abdomine piceo, antennis nigris, pedibus 

 fulvis,tibiis ferrugineis, tarsis piceis, alis fuscis. 



Body rich reddish brown : head tawny, a little broader than the 

 chest ; hinder part dark tawny, and beset with black bristles along 

 the borders of the eyes ; front covered with pale yellow shining 

 down ; clypeus armed with long white spines : eyes bronze ; the 

 fore part flat, composed of large facets, forming an edge along its 

 border and quite distinct from the other part ; lip black, shining, 

 longer than the head, its tip clothed with short tawny hairs ; palpi 

 black, rather long, clothed with long black hairs : feelers tawny ; 

 first and second joints beset with a few black bristles ; second joint 

 a little longer than the first ; third joint spindle-shaped, black at the 

 tip, beset with short black bristles, a little longer than the first and 

 second joints : chest with three black stripes ; the two side stripes 



PART II. 2 H 



