﻿286 S. A. NEAVE — NOTES ON THE BLOOD-SUCKING 



British East Africa, in April 1911. It seems to bite with some freedom, 

 perhaps more so than most species of Chrysops. 



Chrysops fuscipennis, Ric. 



I found this insect not uncommon on and near the south-west shores of Lake 

 Nyasa, in March 1910. Several individuals were taken biting natives. The 

 male is not yet known. 



Chrysops distinctipennis, Aust. (PI. XI, fig. 8.) 



This is a very common species in the more open parts of the country in Uganda 

 and the Nyanza Province of British East Africa. Very large numbers of both 

 sexes may sometimes be found in open short-grass country near water ; thus in 

 two days at Mumias, N. Kavirondo, my collectors brought me 65 d d and 

 16 Q Q all from a very small patch of ground. The insects were taken sitting 

 on the grasses, the males being more sluggish than the females. 



Chrysops brucei, Aust. (PL XI, fig. 9.) 



A common Uganda species, which frequents both well wooded and open 

 country. It is sometimes abundant in the papyrus swamps which commonly fill 

 the hollows in the more hilly country in Uganda. Thus in a papyrus swamp a 

 little north of Lake Isolt, in January 1912, my collectors took in about an hour 

 86 d d and 11 Q Q ; while on the somewhat swampy shores of the Lake itself 

 92 d d and 9 Q Q were taken in one day. Swampy ground, however, does not 

 seem to be essential, since on the shores of a small lake with well-defined banks 

 in the Koki country, Southern Buddu, in October, 195 d d and 21 Q Q were 

 taken in a day and a half. 



Chrysops wellmanii, Aust. 



This species is represented by a single female taken near Luwingu, N.E. of 

 Lake Bangweolo, Northern Rhodesia, in September 1908. 



Chrysops cana, Aust. 



The only specimens of this remarkable little species, in my collection, are the 

 two males already referred to by Mr. Austen.* They were taken on the river at 

 Masongaleni during the heat of the day, and I fancy had only just emerged. 

 The Research Committee have also received a single female of this species from 

 Mr. C. M. Dobbs, District Commissioner at Kericho, British East Africa, taken 

 near that place. This specimen appears to bear out Mr. Austen's view that 

 C. cana is allied to, but distinct from, C. wellmanii. 



The eyes of this species, in the d at least, are unusually coloured for a member 

 of this genus. They are of a deep blue-green, with three small white spots 

 arranged in a triangle, near the outer margin of each eye. 



Chrysops magnifica, Aust. 



The few individuals of this remarkably handsome species recorded by 

 Mr. Austen| were the only ones seen by me. They were nearly all taken in 

 woodland country, biting natives during the heat of the day, in damp weather. 



* Bull. Ent. Res. II, p. 166. f Bull. Ent. Res. II, p. 161. 



