﻿INSECTS OF EASTERN TROPICAL AFRICA. 285 



Rhinomyza umbraticola, Aust. 



I found this species not uncommon in the higher ground of the northern 

 portion of North Eastern Rhodesia during a tour there in 1908. It seemed to 

 be a forest species. 



Rhinomyza innotata, Karsch. 



Five females of this species were captured in October 1908, in the lower 

 portion of the Chambezi valley, North East Rhodesia ; and two females were 

 taken at Nkata Bay, Lake Nyasa, in November 1910. The two latter specimens 

 were biting a native sitting on the beach, shortly after sunset. 



Rhinomyza concinna, Aust. 



This species is represented by a single male taken in March 1908, in the 

 Upper Luangwa Valley, North East Rhodesia. 



Genus Chrysops, Mg. 



This genus is represented in Eastern Africa by nine species or subspecies. 

 The flies occur for the most part in well-wooded districts, and occasionally, 

 e.g., C. funebris, they are typically forest insects. They are usually rather local, 

 and do not, so far as my experience goes, attack man so readily as, for instance, 

 Haematopota. The bite is said, however, to be far more painful than that of 

 species of that genus, though I do not remember ever having personally 

 experienced it. They would appear to bite chiefly under the same conditions as 

 those which favour Haematopota. 



The eyes of these flies in the female sex exhibit very beautiful and complicated 

 patterns of green, gold and purple. The male eye, as in other Tabanidae, 

 resembles that of the female in the lower small-facetted area, but is usually, if 

 not always, different in the upper large-facetted portion. 



Different species of Chrysops exhibit very different types of eye in the male 

 sex. Thus the eyes of the male of C. centurionis, Aust., are relatively very 

 large, the head being holoptic. In other species, such as C, funebris, Aust., 

 or C. distinctipennis, Aust., the eyes of the male are small, and only partially 

 meet in the middle line. 



Chrysops funebris, Aust. 



This is a characteristically forest species, which is not uncommon in the 

 heavily timbered parts of Uganda. It also occurs sparingly in Northern 

 Kavirondo, British East Africa. As in other forest-haunting species of 

 Tabanidae, the males are not easy to find in numbers. They do not differ 

 from the females in colour. Insects of this species are very fond of sitting on 

 the underside of the leaves of large-leaved shrubs in the forest. In the 

 neighbourhood of Entebbe, where the insect is a common one, I have seen as many 

 as 10 or 15 individuals resting on half-a-dozen adjoining leaves. 



Chrysops longicornis, Macq. 



This appears to be an insect of wide distribution, but I have not seen it 

 anywhere in particularly large numbers. Specimens of my own collecting are 

 limited to three females taken in the lower Luangwa Valley, North East 

 Rhodesia, September 1910, and two females at Simba, on the Uganda Railway, 



