72 



Cazalbou,* the disease of dromedaries at Timbuctoo known as 

 mbori, and that termed soumaya or souma at Segou, which affects 

 horses and humped cattle coming from Macina, both of which 

 diseases are trypanosomiases, are propagated by Tabanus ditceniatus, 

 Macq. (Plate XI., fig. 82), and T. biguttatus, Wied. (Plate VI., 

 fig. 45), var. 



In Somahland and elsewhere the bites of other species of Tabanus 

 are sometimes stated by natives to be fatal to domestic animals, 

 but the general untrustworthiness of native statements on such 

 matters is well known ; as will be seen below, in French Congo and 

 Upper Egypt, the deaths of camels have been attributed to the 

 attacks of T. tceniola, Pal. de Beauv. (Plate VIII., fig. 61). 



Tabanus insignis, Loew. 



Of vers, af Kongl. Vetensk.-Akad. Fiirhandl., XIV., 1857, p. 341 

 (1858) : Dipteren-Fauna Siidafrika's, p. 44 (1860). 



Plate V., fig. 35. 



Tabanus insignis, Loew, belongs to a group of medium-sized 

 or small species, in which the dark brown or clove-brown body 

 bears sharply defined, whitish markings : other members of 

 this group are Tabanus diversus, Ricardo, T. sharpei, Austen, 

 T. wellmanii. Austen, and T. argenteus, Surcouf (Plate X., figs. 

 72-75). The range of T. insignis, the type of which was from 

 Kaffraria, Cape Colony, extends at least so far north as Uganda, 

 as shown by the localities of the five females in the Museum Collection, 

 as to which the details are as follows : — Two females from " Port 

 Natal," 1856-57 {R. W. Plant) ; one female from " Port Natal," 1857 

 (Gueinzius) ; one from Natal {ex Saunders Collection) ; and one 

 from the Botanical Gardens, Entebbe, Uganda, September 5th, 1904 

 {Captain E. D. W. Greig, I.M.8.). 



* Cf. L. Cazalbou, Recueil de Medecine VeU'rinaire, October 15, 1904. — See also 

 Comptes lUmdus Hehdomadaires c/cs St'ances de fa Societi' de Biologic, T. LXII.. 

 p. 1104 (1907), and Journal of Tropical Medicine and Hygiene, October 1, 1907, 

 I). 317. 



