﻿154 Annals of the Soidh African Mnsenm. 



ExopRosoPA (Exoprosopa) ignava, Loew. 

 Diptereii-rauiui Siid-Afrikas, p. 232, pi. ii, fig. 31. 



Closely allied to the preceding, but distinguished on account of its 

 much paler and less extended wing pattern. 



Originally described from the Cape and recorded subsequently from 

 the Transvaal ; I have received a specimen from Grahamstown 

 (Cape). 



Exoprosopa (Exoprosopa) seniculus, Wiedemann (1828). 



If I have interpreted exactly the present species it seems to be a 

 common insect in South x^frica, as previously stated by Macquart 

 (who placed it in Litorrhyiichus) ; it is easily distinguishable by the 

 ascribed characters given in the table. Some specimens from Van Wyk's 

 Vlei, Carnarvon (Cape) (E. G. Alston), and from Smithfield (Orange 

 Free State) (D. R. Kannemeyer), 



Exoprosopa (Exoprosopa) klongata, Ricardo (19Ul). 



A distinct, middle-sized species, closely allied to the preceding one, 

 but easily recognised by the venation. Originally described from the 

 Transvaal and Namafjualand (Cape), there are in the Museum 

 collection specimens from Howick, Natal, and from M'Eougosi, 

 Zululand, March, TJll (W. E. Jones). 



Exoprosopa (Exoprosopa) argentifrons, Macquart (1855). 

 Dipt. Exot. Suppl., 5, p. 65, pi. iii, fig. 2. 



A pretty species of small size ; very distinct from all the others 

 owing to the short, black projection of the fore border of the wings 

 and by the silvery frontal patch. 



Described from the Cape and subsequently recorded by me from 

 Western Nyassa ; there is a single male specimen from Cape Town 

 (L. Pcringuey). 



D. Group capensis. 



Exoprosopa (Exoprosopa) capensis, Wiedemann (1821). 



A small-sized, rather aberrant species, distinguished by the rudi- 

 mentary anteunal style, by the spinulose front tibiae and by the 

 characteristic wing pattern. 



