178 



away from its true host, it may be mentioned that Mr. W. L. Distant 

 states that, during his residence in the Transvaal, this fly often 

 attached itself to his neck."^ 



A puparium of this species from Pretoria {Dr. A. Theiler, C.M.O.) 

 is 5.6 mm. in length by 4.8 mm. in breadth at the widest part, and 

 is similar in shape to the puparium of H. maculata, Leach, already 

 described, though the " black cap " at the posterior extremity is 

 somewhat more tumid on each side. The colour, with the 

 exception of the black cap, is dark seal-brown. In front of the 

 black cap the whole surface is very finely punctate ; the lateral 

 and median-ventral divisions of the black cap show very indistinct 

 tubercles. The posterior edge of the cephalic cap (that splits off 

 to permit the escape of the imago) is faintly marked by a darker line, 

 but there is no distinct groove. The longitudinal row of punctures 

 on each side above and below, near the lateral margin, are less 

 sharply marked than in the puparium of H. macidata described 

 above, and the punctures (six in each row) are not connected by 

 a furrow. 



As already stated, according to Laveran,t it has 



Hippobosca been shown experimentally by Dr. Theiler at 



rufipes as a Pretoria that Hippobosca rufipes (with H. 



Disease-carrier, ^^aculata, Leach) is capable of transmitting 



Trypanosoma theileri, Laveran, the cause of 



Gallziekte (gall- or bile-sickness) among cattle in the Transvaal. 



According to Mr. D. Hutcheon, M.R.C.V.S., Chief Veterinary 



Surgeon, Cape Colony, a local form of anthrax in horses in parts of 



Griqualand West, which is very common and characterised by 



circumscribed cutaneous swellings, is " most probably " due to 



infection caused by Hippobosca rufipes. X 



* Of. W. L. Distant, "A Naturalist in the Transvaal" (London: R. H. Porter, 

 1892), p. 244. 



t Comptes Rendus Hehdomadnires des Seances et Mimoires de la Societe de Biologie, 

 Ann6e 1903, pp. 242-243 (1903). 



X Cf. D. Hutcheon, in " Science in South Africa" (T. Maskew Miller: Cape Town, 

 Pretoria and Bulawayo, 1905), p. 348. 



