﻿138 Annale of flie South African Museum. 



was referred erroneously by Macquart to Anthrax collar is, Wied., wliich 

 is an Indian species, and was described by Loew under the name of 

 Exoproso'pa rostrata. It seems to be exclusively a South African 

 species, and not at all rare. It ranges from Cape Town to Rhodesia. 

 There is a female specimen from the Transvaal, Barberton, April, 

 1911 (H. EdAvards), in which the anal cell is more broadly hyaline 

 than usual. » 



LiTORRHYNCHUS TOLLINI, Loew (i860). 



A species smaller and paler coloured than the preceding one, and 

 usually with a hyaline spot in the middle of the first posterior 

 €<41. Dr. Pc'ringuey has bred this species from the mud nest of the 

 ubiquitous wasp Scelifrons qiiartinae, together with the large Ich- 

 neumon, Osprijtichotus capensis, and aMutillid, DolichomutUJa sycmux. 



LiTORRHYNCHUS ARGYJIOI.EPIS, BeZZl (1912). 



Easily distinguished on account of its characteristic wing pattei-ii, 

 with the middle dark band narrowed at end. 



Originally described from Nyassaland, there is in the collection a 

 specimen from Potchefstroom, Ti'ansvaal (T. Ay res), also from 

 Salisbury (S. Rhodesia) (D.Dods.) ; Bulawayo (S. Rhodesia) (R. W. E. 

 Tucker). 



EXOPROSOPA, Macquart (1840). 



This very lai'ge genus has been divided by me into a number of 

 suljgenera. Those represented in the South African Fauna may l)e 

 distinguished as follows: 



1 (4). Discoidal cell lief ore the end below with a strong pi-ojectiny angle and 



there jn'ovided Avith an appendage ; its terminal vein more or less 

 sinuons, and placed at an angle to the longitudinal axis of the 

 wing. 



2 (3). Five posterior cells, the fourth being closed and stalked. 



Metapenta, Eezzi, n. 



'A (2). Only four posterior cells, all open as usual . Acrodisca, Bezzi, n, 



4 (1). Discoidal cell without such a projecting angle ; if sometimes dilated, 

 the xjvojection is a rounded one and destitute of appendage. 



-5 (0). The vein between the discoidal and tlie second posterior cell is long, 

 strongly sinuous, and runs in the same direction as the longitudinal 

 axis of the Aving ..... DefiUppia, Lioy. 



<6 (5). The above-named vein is short, straight or only slightly sinuous, and 

 placed at an angle or even perpendicularly to the longitudinal axis 

 of the wing ..... Exoprosopa, s. str. 



