133 



Leone Protectorate. The following are the localities, etc., of the 

 seven females in the National Collection. Northern Nigeria : 

 Kontagora, September 2nd, 1903 (Surgeon-Major J. J. V. A. C. 

 Raye, W.A.M.S., per Sir Patrick Hanson, K.C.M.G., F.R.S.) ; 

 Zungeru, July 12th, 1905 (Dr. J. M. Dalziel, W.A.M.S.); Zaria, 

 July 15th, and Allowa, Zaria Province, July 19th, 1907 (J. Brand) ; 

 Keffi, Nassarawa Province, September 4th, 1907, " on horse " 

 (Dr. R. F. Williams, W.A.M.S.). Sierra Leone Protectorate: 

 Kaballa, 1908 (Dr. Murphy, per Dr. R. M. Forde, W.A.M.S.). 



This Hcematopota, which is said by Surgeon-Major Raye to swarm 

 at Kontagora, would appear to be particularly bloodthirsty. Dr. 

 R. F. Williams writes that it is "a very aggressive biter both of 

 horse and man," and the specimen from Kontagora bit Surgeon- 

 Major Raye and sucked his blood, inside a mosquito-net. 



Hcematopota tenuicrus, Austen, which likewise occurs in Northern 

 Nigeria, presents some resemblance to H. lacessens in fades, and 

 also, like it, has no bands on the hind tibiae, can be distinguished 

 from the present species by its front tibiae not being swollen. 



Genus HIPPOCENTRUM, Austen. 



Annals and Magazine of Natural History, Ser. 8, Vol. II., p. 352 



(1908). 



PLATE XII., PIG. 95. 



The following are the characters that distinguish this genus 

 from Hcematopota, Meigen, to which it is allied : Head (at least 

 in the female) wholly or for the most part shining ; antennae (at 

 any rate in the female) extremely slender and the first joint elongate ; 

 terminal joint of the palpi in the female very large, and shining 

 on the outer side, which is strongly convex, while the inner side is 

 flattened ; wings, though more or less suffused with dark colour 

 interrupted by pale streaks or blotches, without the peculiar light 



