MARNO ON "SUEKETA" IN SENNAAE. 153 



this march * [Oct. 8, 1871], owing to the numerous herds 

 of game in the vicinity " (p. 354). 



46. 1873. F. Walker. 



"Central African Blood-sucking Flies" {The Ento- 

 mologist, Vol. VI., pp. 327-328). 



Notes on Stanley's statements about blood-sucking 

 flies, quoted above [45]. 



The fly called by the native name " chufwa " by 

 H. M. Stanley is considered by Walker to be Glossina 

 longipalpis, Wied. 



Glossina fusca, Walk., is erroneously stated to be 

 identical with Gl. longipalpis, Wied. 



47. 1873. E. Marno. 



"tJBER DEN EiNFLUSS DER FlIEGEN (TuBAn) UND INSBE- 

 SONDERE DER SuRRETA AUP DIE HaUSTHIERE SeNNAAR'S " 



(Mittheilungen aus Justus Perthes' Geographischer Anstalt 

 iiher Wichtige Neue JSrforschungen auf dem Gesammtgehiete 

 der Geographic, von Dr. A. Petermann. 19. Band, pp. 

 246-249). 



Tsetse-flies stated to have been brought to the author 

 under the name " Surreta," with three other species of 

 flies, two of which were true Tabanidse — by natives in 

 Sennaar, who consider the " Surreta " to be the cause of 

 the mortality among their cattle in the rainy season. 



[The occurrence of a species of Glossina in Sennaar 

 needs confirmation : f the fly identified as such by Marno 

 was perhaps a Stomoxys, or Heematopota.^ 



According to Marno (p. 249), the statement that "in 

 certain parts of Africa at certain seasons domestic animals 

 are killed by the poisonous bites of flies, which in some 

 countries even make the keeping of particular domestic 

 animals impossible " has been constantly repeated since 

 the time of Agatharchides. 



Marno speaks (pp. 246-247) of " the Baiida, a small 

 gnat [eine Heine Jfwc/ce], which is found the whole year 

 through, in damp, swampy lowlands, but occurs in the 

 Charif in myriads, and gives human beings fever by its 

 bite." He proceeds wrongly to identify it with the 



* In Unyamwezi : approximate locality, from author's map, 6° 10' S. 

 lat., 32° 12' E. long, 

 t Cf. [12]. 



