RESEARCH IN SIERRA LEONE. 177 



Mendikama and Jura the country is more hilly and covered with thick forest 

 growth. Glossina fusca was common, and near swampy places and streams on 

 the road G. palpalis occurred ; Stomoxys calcitrans and a new species of Tabanus 

 were caught in the town. From Jura to Bandasuma the road passes through 

 thickly forested country, and the predominant species obtained was Glossina 

 fusca. Reference to the map will show where these were obtained, so that it is 

 unnecessary to detail each locality here. G. palpalis and Tabanus thoracinus 

 were also caught near Gigbema. 



Bandasuma is a very large town, well laid out and very clean, situated on the 

 bank of the River Moa (Plate XIX, fig. 2). Extensive clearings have been made 

 for farming purposes and it says much for the way the town is looked after that 

 only a very few specimens of G. palpalis were seen and no other blood-sucking 

 flies were encountered. 



Between Bandasuma and Falaba (2)* the country is forest-clad, and Glossina 

 fusza was again plentiful all along the route. Falaba is a small toAvn on a tribu- 

 tary of the River Moa. The following blood-sucking flies were obtained there : — 

 Glossina palpalis, Chrysops longicornis, Culex tigripes var. fuscus, Culex pruina, 

 and Simulium damnosum ; the last-named was very troublesome. 



Towards Bumpe, about half-way to Bandajuma, Glossina fusca was again met 

 with, but after that point the country is much more open. Bandajuma was the 

 old headquarters of the Sherbro District, but these are now removed to Pujehun. 

 It will still, however, remain an important town owing to the fact that it is to be 

 one of the new outposts of the West African Frontier Force. It is situated on 

 the River Wanje, a tributary of the Kittam River ; G. palpalis was the only 

 blood-sucking fly seen there. 



From Bandajuma to Sembebun the country is again well forested, and Glossina 

 fusca was found at two places (see map). At Sembehun, on the River Yano, 

 which runs into the Bum or Sewa not far from this point G. palpalis and Simulium 

 damnosum were abundant, the latter in large numbers. The Bum River has to 

 be crossed between Sembehun and Tikonko ; there G. palpalis was caught ; 

 while at Tikonko the same species, Toxorhynchitcs brempalpis and Simulium 

 damnosum were also obtained. The forest in this region gives way to thick bush, 

 while between Tikonko and Bo oil palms are frequent and extensive clearings 

 have been made for cultivation. 



(7.) Bo to Moyamba, via Tungea and Makump. 



The region now to be described lies for the most part in the basin of the River 

 Jong, but part of it also in that of the Burn or Sewa. It was traversed between 

 the 19th and the 25th September ; reference to the map will show the circuitous 

 nature of the route. 



From Bo to Dumballa the country is slightly hilly ; thick bush predominates, 

 but grassy knolls occur in many places. The only blood-sucking fly seen there 

 was Glossina palpalis at the town of Dumballa on the River Tabe, which flows 

 southward and enters the Bum north of Mafwe. 



* To avoid confusion between this town and the other of the same name near Kaballa, I have 

 added the numeral (2) after it. 



