47 



Pooley). In addition to the foregoing the author has examined 

 and deteiniined the following specimens of this species, belonging 

 to the Museum National D'Histoire Natuicllc, Paris ; three females 

 from French Congo, Haute-Alima, May, and " between Hanana and 

 Boma, on man," November 15th {E. liouhaud), and one female 

 from Lake Marguerite, Abyssinia, alt. 1120 metres, September 9th, 

 1907 {Dr. Latham). The specimen recorded above as taken near 

 Jangabu, Northern Nigeria, by Major C. B. Simonds, bears the 

 label : — " In swamp, 1.0 p.m., only specimen seen ; taken biting 

 native ; bite caused much irritation." In Gambia, according to 

 Dr. Hood, C. distinctipennis attacks horses. 



Chrysops dimidiata, v.d. Wulp. 



Notes from the Leyden Museum, Vol. VIT., p. 80 (1885) [Chrysops 



dimidiatus']. 



Plate II., fig. 13. 



A common and troublesome West African species, which has a 

 wide range, including Cabinda (Portuguese West Africa, where the 

 type was obtained), French Congo, Southern Nigeria, and Ashanti. 

 The Museum collection comprises : — Five females from Ologbo, 

 Southern Nigeria, May, 1906 {G. C. Dudgeon) ; one female from 

 Ndogolai, Cross River, Southern Nigeria, 1908 {G. C. Dudgeon) ; 

 twenty-two females from Akwete, Opobo River, Southern Nigeria, 

 October, 1907 {Captain W. H. Best, W.A.M.S.); and six females 

 from Obuasi, Ashanti, June 10th — July 15th, 1907 {Dr. W. M. 

 Graham,W.A.M.S.). 



In Ashanti, according to Dr. Graham, Chrysops dimidiata 

 " frequents verandahs and houses, is extremely bloodthirsty, bites 

 readily, and is a great pest." According to Griinberg,* C. dimidiata 



* Cf. Dr. Karl Griinberg, " Die Blutsangenden Dipteren," p. 127 (Jena:Gustav 

 Fischer, 1907). 



