108 Annals of the South African Museum. 



broad in both sexes and measuring about % of the head ; at a level 

 with the antennae ; it is very convex, and densely clothed with white 

 or whitish thick hairs, with some black ones in the basal half, more 

 numerous in the female ; the colour of the frons is a pale yellow like 

 that of the face and of the cheeks, with a faint white dust. The face 

 and the cheeks are bare and rather shining ; a deep furrow divides 

 the prominent mouth-border from the reddish gense, which are clothed 

 beneath with short vellowish hairs, like the chin. Antennae inserted 

 in a depression between the arched frons and the prominent face ; first 

 joint short, globose, bare, pale yellow ; second joint shorter and 

 smaller, reddish; third reddish, with the stvliform terminal part 

 black, in the female entirely black, three times as long as the first two 

 together, linear, gradually tapering to a styliform point. Proboscis 

 5 - 5 mm. long, entirely black; acute; palpi thick, straight, black, not 

 prominent but long, clothed with yellowish hairs. The praesutural, 

 supra-alar and postalar bristles are long and numerous ; there is 

 besides a very dense tuft of short bristles on the xipper border of the 

 niesopleura, just below the notopleural line ; scutellum with 6-8 pairs 

 of strong marginal bristles ; all the above-named bristles are black 

 in colour. Pleurae entirely reddish, grey-dusted, with scarce scaly 

 tomentum on mesopleura and sternopleura, yellowish or whitish in 

 colour like that of the back. The small squamae are whitish, with 

 short, whitish fringe. Abdomen broadly conical in the male, obtuse 

 and more flattened in the female ; its ground-colour is red, but each 

 segment has a broad basal black bandiu the middle ; in well-preserved 

 specimens the whole abdomen is clothed by dense, scaly tomeutum, 

 which is white on the venter, sides and end, and much darker-yellowish 

 above and at the base ; on the sides and at the end there are short 

 black bristles. The male genitalia are very long and prominent, red, 

 black and pale-pubescent, and surrounded at the base with black 

 bristles ; female genitalia with dense and long anal tuft of golden- 

 yellow hairs. Legs reddish, irregularly darkened and blackened, pale 

 tomentose ; they have numerous and strong black bristles on all the 

 coxae ; the femora underneath bear two rows of bristles, shorter and 

 less numerous on the front pairs : tibiae with many rows of long 

 spines, like the underside of the tarsi at the base. The three last 

 joints of the front and middle tarsi with a peculiar structure ; in the 

 male they are of a semiluuar form, and are provided below with a 

 dense and soft fringe without bristles, with the exception of a single 

 strong bristle at the base of the third segment. Claws strong and 

 short, black, with dark-reddish base. The wings are greyish-hyaline, 

 more or less mfuscated towards the middle, but not at the end as in 



