. Bulletin of entomological research. Entomology. 16 J. W. SCOTT MACFIE—THE DISTRIBUTION OF GLOSSINA of this insect is the reason why cattle cannot live in these districts. As a rule the native herdsman is either unable to give any reason at] all for the death of his cattle, or attributes it generally to " bad water " ; the one exception of which I have heard in Ilorin was in the case of a Fulani at Lafiagi, who told Mr. Budgen, the Resident in charge of the Patigi division, that there was a fly which killed cattle in that district. On being shown a collection of tsetse-flies he sing
. Bulletin of entomological research. Entomology. 16 J. W. SCOTT MACFIE—THE DISTRIBUTION OF GLOSSINA of this insect is the reason why cattle cannot live in these districts. As a rule the native herdsman is either unable to give any reason at] all for the death of his cattle, or attributes it generally to " bad water " ; the one exception of which I have heard in Ilorin was in the case of a Fulani at Lafiagi, who told Mr. Budgen, the Resident in charge of the Patigi division, that there was a fly which killed cattle in that district. On being shown a collection of tsetse-flies he singled out one, which Mr. Budgen believes to have been a specimen of G. submorsita?is, as the sort to which he referred. That Fulani cattle live and breed, apparently in perfect health, in districts in which G. palpalis and G. tachinoides are widely distributed, is undoubtedly true ; indeed it is an everyday occurrence to see herds of cattle grazing beside the streams at the very spots where these tsetses have been found to be most Fig. 5.—Sketch-map showing the distribution of the herds of Fulani cattle in Ilorin province. Elsewhere* I have pointed out that in Northern Nigeria the trypanosomiasis due to T. brucei is much more fatal to horses than that due to T. vivax. If the same statement applies to cattle, this fact may partly explain the restricted distribution of the herds in Ilorin province, for T. brucei seems to be more common in the east and south-east than it is in the west. In Uganda, moreover, Sir David Bruce and his collaboratorsf concluded that the carrier of T. vivax was probably G. palpalis, and it is well known that G. morsitans can transmit T. brucei. Dwarf Cattle. In addition to the Fulani cattle, a few dwarf cattle are met with in the southern and south-eastern districts. A herd of these curious animals is seen amid natural * Annals of Tropical Medicine and Parasitology, vii., no. 1, 1913. f Reports of the Sleeping Sickness Commission of the Roya
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