﻿INSECTS OF EASTERN TROPICAL AFRICA. 299 



Tabanus fuscipes, Eic. 



This is a common species in the middle of the rainy season in the Shire Valley, 

 Nyasaland, and also in the Luangwa Valley, Northern Rhodesia. The eyes 

 resemble those of T. ditaeniatus, Macq. 



Tabanus albipalpus. Walk. 



A few females were taken in the valley of the Kuja River, South Kavirondo, 

 in April 1911, and a single female on the southern slopes of Mount Elgon, in 

 June 1911. The eyes are of the same character as those of T. ditaeniatus. 



Tabanus canofasciatus, Aust. 



This interesting species seems to be confined to forestal areas in the neigh- 

 bourhood of Mount Kenya and the Aberdare Mountains in British East Africa. 

 It occurs up to at least 7,500 feet, in localities where no other species of Tabanus 

 are to be found, though certain species of Haematopota are plentiful. It bites 

 both man and domestic animals readily. The eyes are dusky. 



Tabanus ruwenzorii, Ric. 



Four females Avere taken in the Mpanga Forest, Toro, some 15 miles east of 

 the Ruwenzori Range, in November 1911. It is a typically forest species and 

 bites by day, closely resembling T. canofasciatus in its habits. The eyes of 

 the female are dusky. 



Tabanus producticornis, Aust. (PI. XI, fig. 5.) 



A single male and 38 females of this species were captured at Lamu, or on the 

 sea-shore near by, and also on the small Lake Mpeketoni, a short distance inland. 

 This insect would thus appear to breed in salt, or at least brackish, water, as 

 well as in fresh. The female eye is iridescent and of a dark greenish-grey 

 colour. The male eye resembles that of the female below, while the large- 

 facetted area above is of a deep bronze colour. 



Family Muscidae. 

 Genus Glossina, Wied. 



This genus contains the most important, in an economic sense, of the African 

 biting flies, on account of their relation with trypanosomiasis in man and other 

 animals. It becomes necessary therefore to discuss the habits and distribution 

 of each species more fully than in the case of the Tabanidae. 



Seven species are at present known from the regions of East Africa under 

 discussion, exclusive of the races or varieties of G. palpalis and G. mvrsitans 

 which have been described. 



Glossina morsitans, Westw. 



Before giving an account of the experience of the writer with regard to this 

 important species, reference must first be made to the answers which have been 

 given to a series of questions on the habits of this insect, issued by the Entomo- 

 logical Research Committee in 1910 and 1911. 



