RESEARCH IN BRITISH WEST AFRICA. 333 
and passes through open bush country, beyond which is a range of hills composed 
of a large number of huge granitic bosses. Between two of these is a narrow 
sinuous pass, in which is the Hausa town of Kumbaku. In this valley there is 
deep narrow ravine, in which runs a small stream which contains water during 
the whole year. Near it were caught the following blood-sucking flies :— 
Glossina palpalis, Stomoxys calcitrans, Haematopota pallidipennis, Tabanus 
pertinens, and another species of Tabanus similar to those already mentioned. 
The road from Kumbaku to Kogin Sirikin Pawa is very hilly and rocky for 
about the first ten miles, after which point there is a sudden descent into the 
valley of the river of this name. Onwards, for about five miles, the country is 
covered with thin open bush. No biting flies were seen during this trek, but at 
the river itself Chrysops distinctipennis and Haematopota decora were caught 
around the horses and cattle crossing the ford. 
A few outstanding features in connection with this trip call for comment. 
Geographically, the route may be considered thus. Leaving the valley of the 
Kogin Sirikin Pawa, we crossed the watershed separating this river from the 
River Dinia; the valley of the Dinia was then traversed until at Kateri one 
reached the watershed separating the Dinia from the Garara River, a tributary 
of which, the Mahabei, runs southwards from Kateri. The return route 
followed the valley of the Dinia River, and then crossed the watershed into the 
valley of the Kogin Sirikin Pawa. Kateri, therefore, standing between the 
Rivers Dinia and Garara, is subject to the influences of both, at any rate in so 
far as its Glossina supply is concerned, 
The whole of this part of the country may be described as kurimi-bearing, and 
it may safely be said that where the country has this character strongly 
accentuated, G. palpalis will be found. G. tachinoides was caught at only one 
place, namely, Kurimi-n-lya, while Haematopota pallidipennis occurs throughout 
this whole region. 
Sleeping sickness was found at Kateri, but doubtless occurs in other villages 
in similar situations. The removal of such villages to open ground and _ the 
clearing of the dense bush which surrounds the wells, is strongly to be 
recommended. 
(h) Minna to Izon. 
In order to make as complete a survey as possible of the Garara River, I 
first proposed to continue southwards from Kateri, but owing to the unsettled 
condition of this part of the country, on the advice of the Resident, I returned 
to Minna by rail, and following the main Abuja road, struck the Garara River 
at Izon. ‘This road passes through Paiko, Shaku and Tufa.* 
The first part of the journey is through gently undulating country and thick 
bush. About half-way to Paiko, the Bako River has to be crossed. This river 
was very low in December, but in the height of the rains is about 50 yards wide, 
* Neither Shaku nor Tufa is shown on the map, but a study of the text will give their 
approximate position, 
