Reports to the b\)rcigii Office. 151 



caiLseil Ity the bite of tlio Gloa.si/ut morsitans (jcciirs in place*' sucli ti» 

 Mombiis;i, where T.setse-lly and IJuiTalo are uuu-exi.sU.*nt. 



I have, etc., 



(Signed) KouKur J. Siouuv, M.K.C.V.S. (Vety. Ollicer, H.A.i'j. 



Niiiioni, 



East Africa Protectorate, 



3rd September, I'JOl . 



To R. Stoui.y, Esy., M.II.C.V.8. 



Dkau Mu. 8tori>y, — Many thanks for sending me the communi- 

 cations you have received from Sir Charles Eliot, re the Buffalo and 

 Tsetsc-fiy. 



That the two should Ije associated is not extmordinary when oue 

 remembers tliat both inhabit deusely- wooded, dump, secluded districts, 

 but the arguments advanced to prove that the />y.s Cajfa alune is tl»e 

 host of the Tsetse, and that the exteriiiiuation of the former leads to the 

 disap^K-arance of the latter do not appciir to me to Ije convincing. From 

 my own observation I am inclined to the opinion that hosts other than the 

 one sjK'cies mentioned (or some other factors) are necessiiry for the 

 propiigation of the fly, and that the hiematozoon is in all proliability to 

 be found in many species of diptera. 



During my residence in Jubaland, East Africa Protectorate, whi<h 

 extended ovi-r two years, I had ample opjxirtunity of studying the hatiits 

 and distribution of the Tsetse-fly and the effL-ct it jiroduceil on domestic 

 animals. 



Speaking generally, the fly Ml is coutined to iwo distinct areas m 

 that province. 



(1) The valley of the Juba River within the forest belt. Here fly 

 abounds for a distance of upwards of t<»0 miles — in fact, so geoenil 

 is it in places that it is a source of annoyance t4) EurojH-ans and natives. 

 Yet within the whole of that great tnict of coiuitry HiilTalo arc few and 

 far between. The lati- Sir. Jenner and I came across them in one place 

 only (Lake (Jalcy and district). Within this belt is the district of (tosha. 

 8U to loO miles in length, where the liy is jR-culiariy abundant, yet HutTalo 

 are not found ; notwithstanding this, the liu'inatozoon is very virulent, 

 and on the occasion of the late Mr. Jenner's exp^-ilition t<» Lugn in 1H1>'.», 

 he lost every camel and |>ack-o.\ that went through (/•/<//> my rej>ort. 

 May H'.th, l^<'.»'.•, forwarded to ihf S creUiry of State for l'orcii:n AlTair>. 

 No. 53, May .Slst, IMU'J). 



(2) Th(' region of Lake Kund>i to the n<trth-cast of Dt.stk Wania 

 (Lake ilardinge), where the distriliution of the lly is restricte<l to the 

 dense forest Ixlt in the neighbonrlnKKl ; yet Huff.ilo an" not known to 

 freouent this district. It ap|)eani to mu reaisonable to nssunic that wheru 

 fly IS abundantly found exUn«iing over a large tratt of country that \ia 

 natunil host (if one only) should be in lai-ge numl>ens also; or else tiie lly 

 must be jH>sscs«e<l of extraordinary mignitory iKiwers. 



If that host Ix; the HufTalo, it is slranue that it is {Kirticularly 

 conspicuoiLH by its alwencc in the extensive districts meniionetl, while 

 waterbuck ami bushbnck aiv common in most ]iarts, and yet again iu 



