On the Bomli/lllil Fiinn <;/' tiouth Africa (Diptcra). 49 



sides. The genae are clothed with white hairs, and are absolutely 

 destitute of bristles in both .sexes. Antennae with the first joint 

 very short, only twice as long as the second; pale red in the male and 

 clothed with white hairs, dark red with yellow hairs in the female; 

 the second joint is globular and black ; the third is black, about twice 

 as long as the two first joints taken together, only a little dilated at 

 base and gradually tapering in a long styliform end. Proboscis 

 black, short, 6'5 mm. long, with the basal ring reddish yellow and 

 with the extreme base of the labium dark red below ; palpi reddish- 

 yellow, very thin, with short whitish hairs and with a few longer ones 

 at end ; peristome yellow. Thorax black, clothed with short equal 

 hairs of a tawny colour, darker in the female; on the pleurae and 

 breast the hairs are short and quite white ; in the male the bristles 

 are pale yellowish and only notopleural and post-alar ; they are darker 

 in the female, and in addition there is a strong tuft below the noto- 

 pleural line, and other tufts in front behind the head and on the hind 

 border of mesopleura. Scutellum red, with soft hairs like those of 

 thorax, and with strong, pale, or dark yellowish bristles at the hind 

 border. Squamae dirty yellowish, with a white fringe ; halteres 

 yellowish. Abdomen black, with the hind border of the segments 

 and the venter red ; it is clothed with dense and equal pale yellowish 

 hairs, which from a front view show whitish sheens, and are denser in 

 the male than in the female, but in both are distinctly tuft-like at 

 end; there are complete rows of bristles at the hind borders of the 

 segments, thinner and pale yellowish in the male, stronger and darker 

 in the female ; venter with scarce white hairs and almost destitute of 

 bristles. Male geuitalia yellow, anal tuft of the female luteous, but 

 iu both they are hidden within the fur. Legs entirely pale yellow, 

 even at the end of the tarsi ; the femora are bare and clothed with 

 white scales; all the spines are yellow, the front femora with 1, the 

 middle with 3-4, the hind with 7-9 spines below. Claws yellow, with 

 black end ; pulvilli yellowish, one third as long as the claws. "Wings 

 with the basal comb formed by yellow and black bristles ; they are 

 hyaline, but with a basal infuscation of a pale yellowish-brown tint, 

 more extended in the male than in the female, but in both not sur- 

 passing the end of the first vein ; in the male the border of this 

 iufuscatiou goes obliquely from the above-named point to the end of 

 the fourth posterior cell, the second basal, anal and axillary cells being 

 in greater part hyaline ; in the female the infuscation is almost 

 limited to the fourth vein ; alula hyaline, with pale fringe. Veins 

 rufous, a little infuscated at end. Discoidal cell broadly truncate, 

 but its sides less parallel than in the preceding species, and its apical 

 4 



