The first Stidanese specimens of R. appendiculatus were collected 

 by Mr. H. Ltocmoore at Kajo Kaji and Yei in 1950 in connection vri.th 

 the first definitely known outbreak of East Coast fever in the Siu 

 dan* (Evans 1952). Mr. LiDonoore sent these specimens to the writer 

 for determination, and their identity was later corroborated by Dr. 

 G. Theiler. A restriction was then placed on the movement of 

 cattle from Uganda into Kajo Kaji and out of Kajo Kaji and Yei 

 District. 



*If East Coast fever, of which R. appendiculatus is the chief 

 vector, had been a significant problem in the Sudan earlier, it 

 seems most likely that the hard-working Sudan Veterinary Service 

 woxild have recognized it. 



Without presenting data, Schwetz (1934) accxised the Anglo- 

 Egyptian Svidan as being the source of an epizootic of East Coast 

 fever in Stanleyville, Belgian Congo. 



In Egypt (Mason 1920) , 32 cases of this disease were diagnosed 

 in Sudan cattle at the Cairo abattoir in 1917. Mason (1922) further 

 reported that East Coast fever had been demonstrated in Sudan cattle 

 arriving at Egyptian quarantine as early as 1913. So far as it has 

 been able to determine, the bulk of Egyptian cattle imports from 

 the Sudan has always been from Kordofan and Darfur Provinces. The 

 occurrence of this tick and of this disease in these two Provinces 

 wotild be surprising indeed. It seems unlikely that (l) the disease 

 is xmrecognized in Kordofan and Darftir, (2j tne brown ear-tick oc- 

 curs in these commercially important cattle-raising areas of the 

 Sudan, and (3) a secondary vector plays an important role in Prov- 

 inces from which cattle are exported. 



Possibly, early Egyptian veterinarians lumped animals imported 

 from Ethiopia, Kenya, and Tanganyika under the designation "Sudanese" , 

 as is still the practice. In the course of svcrveying the ticks ar- 

 riving in Egypt on "Sudanese cattle", numerous specimens of Amblyomma 

 gemma have been obtained. This species is not represented in avail- 

 able Sudan collections. Investigation has revealed the present 

 practice of referring to all cattle imported into Egypt from Africa 

 as "Sudanese". In connection with Brumpt's (1920) reference to 

 Blast Coast fever in Egypt and the possibility of its transmission 

 by R. simus and R. bursa , see DISTRIBUTION of R. s. simus (page 



- 601 - 



