40 



SLKEPINO SICKNESS IN THE ANGLO-EGYPTIAN SUDAN 



nislribution 

 of Fly 



Conclusion 



It seems to me to be reasonably possible for the disease to be kept under control in this 

 part of the Lado, provided that fresh infection is not introduced by means of porters 

 coming; from Uganda and the Congo. They are now being carefully examined at Yei, and 

 the Sudan Government is being advised as to the framing of regulations for dealing with 

 this danger. 



Witli regard to the distribution of tsetse fly in the fjado, T met Captain Drew, 

 K.A.M.C., and Mr. King, Government Entomologist, in Yei. They had followed down the 

 course of the River Yei from M'volo, in the Bahr-El-Ghazal {vide Map, Fig. 7), and 

 reported that palpalis was present, both on the river and adjacent khors, throughout the 

 entire route. 



El Bimbashi Stigand, tlie Inspector at Rejaf, reported he had found momitans and 

 -palpalU in khors north of the Automobile Road between Ganzi and Wande, and also showed 

 US flies of both species collected from around Kajo-Kaji south of Rejaf. Tliis fly area 

 apparently extends into the hills in the neighbourliood and was formerly believed to be 

 fly-free. Further reports having also been received of the spread of Sleeping Sickness 

 northwards on the right bank of the Nile in Uganda territory, Mr. King has now gone 

 to Kajo-Kaji to investigate into the northerly limit of palpalis on the Nile bank in 

 the Lado. 



Personal!}' I am of the opinion that where suitable conditions of water and shade 

 exist, there palpaUf, morsitans, or both, will be found, and that the tsetse fly lias a much 

 wider area of distribution in the Lado tlian was at first suspected. 



*A.-v_^ :d?->k..Y> > -^v-*t>.*: 



Fig. 11 .— Sle ecino oiv-KNt^.s Cam *-. Y i 



