62 Annals of the South African Museum. 



broader tliaii the eye. Antennae entirely black, the third joint one 

 and a-half times as long as the two first taken together, linear, obtuse, 

 thinner than the rather thin, short and white-haired first joint. 

 Proboscis entirely black, 3'5 mm. long. Halteres whitish. Legs 

 white-scaled, with white spines and white spicules ; claws black ; 

 pulvilli absent. Wings entirely hyaline, vitreous, with pale yellow 

 veins, no distinct comb, but the costa is white-scaled at the base; 

 alula broad, rounded and fringed with white. Upper branch of the 

 third vein very much retreating at the base ; discal cross-vein placed 

 much before the middle of the discoidal cell, which is as broad as 

 long, triangular ; first posterior cell not narrowed at end ; anal cell 

 sometimes narrowed at end. 



DlSCHISTUS OVATUS, sp. 11OV., J . 



A dark species with long ovate body, recalling that of BombyUiis 

 kilimandjaricus and differing from the other species of the present 

 group in having the hind femora not spinose below. 



Type <$ , a single, not well-preserved specimen from the Cape, 

 without special locality. 



Length of body 11 mm. ; of wing 10 mm. Head dark-tawny, 

 grey-dusted, black on the occiput ; this last little developed, clothed 

 with short and dense black hairs above which become very short and 

 brownish below and merge into the less developed beard of a paler 

 colour ; ocellar tubercle black-haired. Eyes with equally small 

 areolets, less approximated, the frons at the narrowest point being 

 as broad as the vertical triangle ; it is less broadened forwards, and 

 bears sparse and short, erect black hairs ; face gently rounded, clothed 

 like the cheeks with sparse black hairs, with some shorter yellowish 

 ones intermingled. Antennae entirely black, but the first joint 

 pale-dusted, three times as long as the second, clothed on the two 

 sides with long black hairs ; third joint as long as the two first joints 

 taken together, not broader at the base than the second, gradually 

 tapering to a short point. Proboscis entirely black, rather thick, 

 4 mm. long. Thorax, scutellum and abdomen deep black, clothed 

 with rather short dark brownish hairs, which, viewed from the front, 

 are shining-pale ; there are no black hairs intermingled ; the bristles 

 at the postalar cells and at the hind border of the scutellum, like 

 those of the hind border of the abdominal segments, are black and 

 well developed. Pleurae below and breast with greyish hairs ; 

 metapleurae with Avhitish and black hairs intermingled. Squamae 

 tawny, with short whitish fringe; halteres yellowish-brown. Venter 

 black, reddish-yellow at base, grey-haired ; geuitalia dark red. Legs 



