OH the BomlijiiiiJ Fauna of South Africa. (Diptera). 25 



long- stalked ; discoidal cell very broad at end, the vein between it 

 and the second posterior cell being- of unusual length, with the sides 

 about parallel ; discal cross-vein perpendicular, placed after the middle 

 of the discoidal cell ; anal cell broadly open ; alula opaque, brownish- 

 yellow, with a short yellowish fringe. 



BOMBYLIUS MICANS, Fabricius (1798). 



This species may be at once distinguished from all the others here 

 recorded on account of its yellow alar comb and of the yellow femora. 

 A single couple from Darling (Cape), 1905 (L. Pei-inguey). 



It answers very well to Loew's description, but all the hairs and 

 bristles of the head are without any exception yellow or whitish. The 

 tuft of yellow bristles on the genae, or peristomial comb, is well 

 developed. 



BOMBYLIUS HYFOLEUCUS, Wiedemann (1821). 



A species easily distinguished by the greater size and the short 

 and broad second and third posterior cells. 



There are numerous specimens of both sexes, answering to Loew's 

 description: Namaqualand, O'Okiep (Cape), September-October, 1890 

 (R. M. Lightfoot) ; Stellenbosch, 1887, and Darling (Cape), 1905 

 (L. Peringuey) ; Bushmanlaud, Henkries (Cape), October, 1911 

 (R. M. Lightfoot) ; G-iftsberg, Van Rhyusdorp (Cape), September, 1911. 

 One of these specimens was labelled by Bigot, " B. styUcornis, 

 Macq.," wrongly, as this last species is undoubtedly a Systoechus, 

 and is pei'haps the same as S. mixtns, as shown by fig. 2, pi. vii, 

 of Macquart. 



BOMBYLIUS HIRTUS, Loew (1860). 



Closely allied to the preceding, but distinct by its smaller size and 

 by the different shape of the posterior cells of the wings. 



Some specimens of both sexes from Darling (Cape), 1905 (L. 

 Peringuey) ; Matjesfontein (Cape), September, 1896 (W. F. Purcell) ; 

 Namaqualand, O'Okiep (Cape), September, 1893 (R. M. Lightfoot). 



BOMBYLIUS SERVILLEI, Macquart (1840). 



Very distinct from all the foregoing species owing to the black 

 spines of the legs ; in this character, and in the almost spotted wings 

 and in the partly black bristles of the peristomial comb the present 

 species is a connecting link with the following capensis group. 



Two female specimens from Fraserburg (Cape), April-June, 1885, 

 determined by Bigot as servillei and answering very well to the original 

 description. 



