﻿Oil tlie Boinhijliid Fauna of South Africa (Dipfera). 6$ 



with the coxae entirely yellow, pale-scaleil, scarcely white-haired on 

 the femora, which are unarmed, and having even on the hind pair 

 only a few rigid hairs ; spicules of the tibiae less developed, yellow,, 

 claws yellow, with black point; pulvilli not distinct. Wings vitreous, 

 hyaline, faintly yellowish at base and along the costal cell ; basal 

 hook strongly reddish ; basal comb distinct, black, yellowish tomentose;. 

 alula broad, yellow-fringed. Veins black, but the entire first vein 

 and the base of the others are yellow ; upper branch of the cubital 

 fork retreating ; first posterior cell narrowed at end ; discoidal cell 

 short and broad, truncate at end, its terminal vein being longer than 

 the discal cross-vein, which is placed before the middle ; the two lower 

 veins of the discoidal cell are of almost equal length. 



DiscHisTus SERiATUs, Wiedemann (1821). 



Closely allied to the preceding species, from which it is distinguished 

 by the smaller size, the darker legs and the well-developed spines at 

 the underside of the hind femora. 



A very small male specimen, measuring only 5 mm. in length, from 

 Van Wyk's Vlei, Carnarvon (Cape) (E. G. Alston), 1893. Wiedemann 

 has described the female from the Cape ; the eyes of the male have 

 equally small areolets and are approximate to a distance equal to the 

 distance of the ^^osterior ocelli. Proboscis short ; genitalia dark red ; 

 abdomen mainly black-haired; pulvilli very short. Wings entirelv 

 hyaline ; first posterior cell not narrowed at end and very long ; 

 discoidal cell obtuse at end, twice as long as broad. 



DiscHisTtrs viTTiPES, sp. nov., (^ . 



A species of proportionally large size, having strongly spiuttse legs 

 and broadly infuscated, very long wdngs, which have in addition a 

 rather large basal comb. 



Type (^, a single specimen from Bushmanland, Jackal's Water 

 (Cape), October, 1911 (E. M. Lightfoot). 



Length of the body 10" 5 mm. ; of the wing 12 mm. Head reddish ^ 

 grey-dusted, black on the occiput, w-hich is developed and convex, 

 clothed with pale yellowish hairs above, with whitish and shorter 

 ones on sides and below, without any black hairs ; beard scarce, 

 white. Frons broad ; eyes with equal areolets, less approximate, 

 separated for a distance twice as broad as the ocellar triangle ; ocellar 

 tubercle with some dark hairs ; frons little broadened forwards, with 

 sparse dark hairs in the middle and other whitish and longer hairs 

 on the sides. Face very broad and long, gently curved, clothed like 

 the very narrow cheeks with scarce and long white hairs ; geuae 



