18 Annals of the South African Museum. 



curved at base ; discal cross-vein situated much before the middle of 

 the discoidal cell ; first posterior cell rather broad, not pointed, and 

 very long stalked ; discoidal cell rather small, but longer than the 

 second posterior cell, which is broader than long. 



BOMBYLIUS IMPURUS, Loew (1863). 



A single male specimen from Bushmanlaud, Jackal's Water (Cape), 

 October, 1911 (E. M. Lightfoot). 



A well-marked species characterised by the numerous black bristles 

 at the hind border of the abdominal segments, by the entirely black 

 antennae, by the black base of the femora and by the red scutellum. 

 The palpi are dark brownish ; the proboscis is entirely black and rather 

 long, measuring 8 mm., with a length of body of 14 mm. Bristles of 

 legs entirely yellow, those on the hind femora numerous and well 

 developed. Abdomen entirely black. The long bristles of the thorax 

 are of a dark yellowish colour. Wings with a rather long and yellow 

 basal comb ; veins yellow, black outwardly ; marginal cell broad at 

 base ; second submarginal twice as broad at base as at end ; first 

 posterior cell broad and short, obtuse, long-stalked. Discal cross-vein 

 after the middle of the discoidal cell ; this last cell broad, obtuse at 

 end, much longer than the second posterior cell, which is broader than 

 long ; alula very briefly fringed Halteres with whitish knob. 



BOMBYLIUS MUNDTJS, Loew (1863). 



I refer to this species, of which Loew has described the female only 

 from Bloemfontein, some specimens which agree very well with 

 his description. Length 8-10 mm., but the proboscis is only 

 4-5 mm. long, and therefore not corpori subaeqnalis as stated in the 

 description. 



Some specimens of both sexes from Bushmanland, Jackal's Water 

 (Cape), October, 1911 (E. M. Lightfoot) ; a female from O'Okiep, 

 October, 1885, labelled by Bigot B. picticornis, MS. I think that the 

 B. flavus of Macquart may prove to be the same species. I have 

 assumed as principal character of the present species the acute form 

 of the first posterior cell, the sides of which are stalked ; marginal 

 cell broad at end ; upper branch of the cubital fork not much bent at 

 base, but the second submargiual cell always twice as broad at base as 

 at end ; discal cross-vein after the middle of the discoidal cell, which is 

 very broad, but longer than the second posterior cell ; this cell very 

 broad at base. Basal comb yellow, short. The proboscis is entirely 

 black above, but red below. Eyes of male contiguous for a short 



