172 



Annals of the South African Museum. 



OESTR ANTHRAX, Bez. 

 OESTRANTHRAX OBESUS, Loew. 



An example from Durban, Natal, March 10th, 1919 (H. W. Bell- 

 Marley) lacks the appendix projecting into the discoidal cell, but is 

 typical in other respects. 



The following note is appended to the specimen : " This fly came 

 out of an old log containing Cossid larvae." Certain species of the 

 related genus Villa are known to be parasitic upon larvae of nocturnal 

 Lepidoptera. 



THYRIDANTHRAX, O. Sack. 

 THYRIDANTHRAX VIDUATUS, Loew. 



Dipteren-Fauna Siid-afrikas, p. 221, pi. ii, fig. 22. 



Montagu, Cape, November, 1919 (R. M. Lightfoot). 



Distinct from T. lug ens and T. transiens in the long discoidal cell, 

 in the first posterior cell distinctly narrowed at end, and in the 

 lighter pattern of the base of the wing. 



SYSTEMATIC ARRANGEMENT OF THE GENERA AND 



SPECIES. 



BOMBYLIINAE. 



BOMBYLIUS, L. 



lateralis, Fab. 

 bombiformis, Bez. 

 haeinorrhoidalis, Bez. 

 acroleucus, Bez. 

 mutilatus, Bez. 

 kilimandjaricus, Speis. 

 furiosus, Walk, 

 ornatus, Wied. 

 rufiventris, Macq. 

 mollis, Bez. 

 disjunctus, Bez. 

 eurhinatvis, Bez. 

 brachyrrhynclius, Bez. 

 globulus, Bez. 

 impurus, Loew. 

 mundus, Loew. 

 sessilis, Bez. 

 xanthocerus, Bez. 

 marginellus, Bez. 

 paterculus, Walk, 

 ruficeps, Macq. 



purpureus, Bez. 

 micans, Fabr. 

 hypoleucus, Wied. 

 hirtus, Loew. 

 servillei, Macq. 

 capensis, L. 

 nieu-aspilus, Bez. 

 braunsi, Bez. 

 punctatelhis, Bez. 

 punctifer, Bez. 

 pentaspilus, Bez. 

 obesus, Bez. 

 spinibarbus. Bez. 

 angiilosus, Bez. 

 nigripecten, Bez. 

 peringueyi, Bez. 

 urgentifei*, Walk, 

 molitor, Wied. 

 hirticeps, Bez. 



SYSTOECHUS, Loew. 

 scabrirostris, Bez. 

 ventricosus, Bez. 

 simplex, Loew. 



