﻿INSECTS OF EASTERN TROPICAL AFRICA. 295 



Tabanus nyasae, Ric. 



This seems to be a common insect over a great part of Northern Rhodesia and 

 Western Nyasaland, and my collection contains a very large number of both 

 sexes. Some individuals seem to be scarcely distinguishable from forms of 

 T. denshami, Aust. The eyes of both sexes resemble those of T. taeniola. 



Tabanus fraternus, Macq. 



A widely distributed species, though nowhere particularly common, so far as 

 my experience goes. Dr. Aders reports, however, that it is plentiful in Zanzibar. 

 It seems to resemble T. taeniola in its habits, and the colours of the eyes of both 

 sexes are the same as in that species. 



Tabanus trianguliger, Aust. 



A series of this newly described fly, comprising about 20 females, was 

 taken in the Uhehe and Usaugu districts of German East Africa, in November 

 1910. The female eye is dusky like that of T. taeniola. 



Tabanus quadrisignatus, Ric. 



A small series of both sexes of this species was taken in Northern Rhodesia 

 and Nyasaland. The eyes in both sexes resemble those of T. taeniola. 



Tabanus distinctus, Ricardo. 



This seems to be a fairly common species throughout North-Eastern Rhodesia, 

 the northern portion of Nyasaland and the part of German East Africa near the 

 northern shore of Lake Nyasa. The eyes of both sexes resemble those of 

 T. taeniola, but in the S the ground-colour of the large-facetted area is paler 

 and the dark markings are more distinct. 



Tabanus coniformis, Ric. 



This rather obscure looking insect has a wide distribution in Northern 

 Rhodesia, Nyasaland and German East Africa. The eye of the Q is dusky, 

 that of the o* dusky below and shining grey above. 



Tabanus sandersoni, Aust. 



Two females were taken in the Ruo Valley, near Chiromo, Nyasaland, in 

 April 1910. The female eyes are dark purplish. I have not seen a living male, 

 but judging by males received by the Entomological Research Committee from 

 Dr. Meredith Sanderson, the large-facetted portion of the male eye would 

 appear to be unhanded and of a purplish bronze colour. 



Tabanus pallidifacies, Sure. 



A small series of eight females of this species was taken on the Tsavo River, 

 British East Africa, in March 1911. They were all captured on the reeds, etc., 

 on the river bank, except one or two which were biting natives bathing in the 

 river. The eyes of the female are dark purplish. 



Tabanus barclayi, Aust. 



Only a single female of this recently described species occurs in my collection, 

 taken in February 1910, in the Upper Shire Valley, Nyasaland. A few 



