8 



and the wheal raised by it is relatively very large, and still itches 

 on the following day. The members of the Expedition encountered 

 this fly only in small villages, surrounded by vegetation." 



When forwarding the specimens from the Bwamba Country, 

 South-West Uganda, recorded above, Mr. M. T. Dawe, of the 

 Scientific and Forestry Department, Entebbe, Uganda, wrote as 

 follows on September 2nd, 1905 : " The bite of this species is very 

 irritating, even more so I think than that of the " rribwa "-fly,* 

 that I sent you from the Mabira Forest. These Midges are more 

 troublesome during dull days, and bite fiercely in the early morning 

 and evening, raising large irritating wheals that itch badly. They 

 sometimes soar in large numbers, from four to six feet above the 

 ground. The Luamba name for the fly is Bukukuni." 



Culicoides grahamii would appear to be the African representative 

 of the equally bloodthirsty G. varius, Winn., of Europe ; the wing- 

 markings of the two species are identical, but C. grahamii can at once 

 be distinguished by its much smaller size, paler antennae, and much 

 more conspicuous pale bands on the tibiae : British specimens of 

 C. varius exhibit nothing more than faint indications of pale tibial 

 bands. 



* Simulium damnosum, Theob., see below p. 28, and Plate I., fig. 6. 



