0)1 the Bombyliid Fauna of South Africa (Diptera). 149 



yellowish, with dark fringe ; basal hook black, long, gently curved ; 

 comb very broad, reddish, yellow-towientose, with short black bristles. 

 Marginal cross-vein less retreating ; di^coidal cell very acute outwardly, 

 but its terminal vein considerably shorter than the vein at the base of 

 the third posterior cell ; second basal cell broader at end than the 

 discoidal one ; axillary lobe very broad and short ; anal cell narrowly 

 open . 



EXOPROSOPA (DEFILIPPIA) HIRTIPES, Loew (1860). 

 Diptereu-Fauna Siid-Afrikas i, p. 233, pi. ii, fig. 32, 1860. 



A very distinct species on account of its peculiar and rich wing 

 pattern, and the only species here recorded having the second basal 

 cell broadly hyaline. 



Not rare in South Africa and found also northward on the East 

 Coast. The ciliate front tarsi are present only in the female. There 

 is a couple of specimens from Dunbrody, Uitenhage (Cape), March, 

 1903 (J. A. O'Neil). 



SUBGEN. PTEKOBATES, Bezzi. 



This subgenus is easily recognised from all the other subgenera 

 of Exoprosopa, s. lat., on account of its broadly feathered hind legs and 

 of its very peculiar wing pattern. 



EXOPROSOPA (PTEROBATES) APICALIS, Wiedemann (1821). 



Of this old and well-known species there is a specimen from 

 Dunbrody, Cape Colony, 1908 (J. A. O'Neil). 



SUBGEN. EXOPROSOPA, sensu stricto. 



The species of the present subgenus are very numerous, and not 

 always easy to distinguish from those of the preceding one, especially 

 those with an extended wing pattern. They may be divided in some 

 groups, which at present must be considered as artificial ones, but help 

 in the determination, as can be seen from the following table : 



1 (40). Wings not wholly hyaline, but with a more or less extended and 



defined dark pattern. 



2 (3). Wing-pattern filling up the entire black wing, only the extreme apex 



being whitish and hyaline (nemesis-group) . . nemesis, Fain-. 



