70 Annals of the South African Museum. 



yellowish, but the strong bristles of the base are black iii the male and 

 dark-golden in the female. Proboscis entirely black, 3 mm. long. 

 Thorax and scutellum black, densely bluish-grey dusted ; they have a 

 scarce but well- developed golden tomentum on the back, and are 

 clothed with erect, rather long and scattered dark hairs, with some 

 shorter pale ones and very numerous and very long golden-red 

 bristles. The pleurae are densely pale grey-dusted, and have scarce 

 white hairs below and on the middle, being bare on the metapleura 

 and on the surrounding parts ; the mesopleural bristles near the root 

 of the wings are golden like those of the back. Squamae brownish 

 black, grey-dusted with yellow fringe. Halteres yellow, with paler 

 knob. Abdomen black, dusted-polliuose, pubescent like the thorax 

 and provided with golden-red bristles ; 011 the sides are numerous 

 yellow hairs intermingled with the dark ones. Male geuitalia small ; 

 concealed, black, yellow-haired. Venter entirely black, grey-dusted, 

 without the yellow hind borders of A. anomala, clothed with white 

 hairs. Coxae and femora black, the former with long white hairs, the 

 latter whitish pubescent, with some white hairs below at the base and 

 with yellow tips ; their spines are strong and long, yellow, 2-3 on the 

 middle, 5-6 on the hind pair. Tibiae and tarsi pale yellow, only the 

 last tarsal joint being black or darkened, with long and stout spicules, 

 even those of the front pair, the spicules being in great part black, 

 but those of the inner side are yellow. Claws yellow, with black tip ; 

 pulvilli dirty- whitish. Wings greyish-hyaline, with the base and the 

 fore half infuscated; the fuscous spots are more numerous; and more 

 distinct than in anomala. There is a broad quadrate spot on the discal 

 cross-vein, extending above almost to the second vein and preceded by 

 a hyaline space of equal size ; two united spots at the base of the 

 cubital fork and of the cross-vein deliminatiug the upper submargiual 

 cell ; a spot on the vein at the end of the discoidal cell ; another at 

 the extreme basal angle of the third posterior cell and a third at the 

 base of the fourth posterior cell ; there is besides a rounded spot 

 before the end of the anal cell, of which there is no trace in anomala. 

 The second basal cell has a rounded whitish spot above before the base 

 of the discoidal cell, which is not distinct in anomala. The alula is 

 dark brownish, like the squamae and the extreme base of the wings ; 

 the small basal comb is black, but densely golden yellow-tomeutose 

 and white pubescent at base, this last pubescence extending to the base 

 of the sixth vein. The veins are dark yellow, but the first and the 

 costa to the end of the upper branch of the cubital fork are pale 

 yellow ; the costa is golden-tomentose. 



