RESEARCH IN SIERRA LEONE. 167 



The advantage of clearing an area on either side of the watering places and 

 main crossings might be considered. Game is plentiful within a very short 

 distance of the station. 



The following blood-sucking insects have been found at Batkanu : — Glossina 

 palpalis, Tab anus kingsleyi, T. taeniola, T. pa?-, Culiciomyia nebulosa, Anopheles 

 costalis, Stegomyia fasciata and S. sugens. The commonest tick is Haemaphysalis 

 leachi. 



Between Batkanu and Karima, the boundary between the Karene and 

 Koinadugu districts, the road crosses the River Ma bole twice. The country is 

 practically level, and the general type of vegetation is similar to that south of 

 Batkanu. One species of Haematopota was seen, but not captured, on this road. 



Karima is a large cattle town of about 150 huts situated on the right bank of 

 the Mabole River. Formerly it was much larger, but owing to its increasing 

 size and the paucity of farming land and pasture, several small towns have 

 separated off. One of these is Kamatoto, to which reference was made on 

 page 164. The town of Karima is laid out in practically the same manner as 

 Rowerre {see page 166). Glossina palpalis was the only blood-sucking fly 

 seen there. 



North of Karima, the hilly country is again entered and this extends the 

 whole way to Kaballa. The road lies in the valleys of a long mountain range, 

 so that with the exception of a few places travelling is not arduous. 



Near Kaniki, the hillsides and valleys are covered with thin bush, and the 

 country is extensively farmed. At this town G. palpalis and a species of 

 Ceratopogon were abundant. Between Kaniki and Kafogo, G. palpalis was 

 found at most of the streams, and Tabanus kingsleyi was seen at several places. 

 At Kafago the following were caught : — G. palpalis, T. kingsleyi, T. besti, 

 Simulium damnosum, and Ceratopogon sp. From Kafogo to Kaballa, the road 

 passes through Igaia. The country is mountainous as before and the vegetation 

 is very similar to that described, but if anything, slightly higher and denser. 

 At Igaia, Glossina palpalis, Tabanus besti var. arbucklei, and Hippocentrum 

 trimaculatum were found. It is worthy of note here that between Igaia and 

 Karassa {see map) Glossina longipalpis and G. fusca were captured by Dr. 

 J. Y. Wood — the former at two places, the latter once. 



(3.) Kaballa to Hangha. 



The route now to be described is a very tortuous one {see map), and is divided 

 between three distinct river systems : — the Rokell, the Bum or Sewa, and the 

 Moa. The journey was accomplished between 30th May and 3rd July, a 

 season when travelling was arduous and not without its discomforts, owing to the 

 rains having set in, but at the same time a season when insects are much more 

 numerous than in the preceding months. 



The road from Kaballa to Yiraia Sokurella, via Falaba and Kombile, 

 encircles the head-waters of the Rokell River (known as the Seli in this region), 

 and crosses, not only the Rokell itself near its entry into Sierra Leone, but also a 

 large number of its tributaries. From Kaballa the road to Falaba passes 

 through Benikoro and Sonkonia, and this is part of the main Falaba-Port Lokko 

 Road. The country is hilly, but the road for the most part follows the valleys. 



32306 B 



