170 JAS. J. SIMPSON — ENTOMOLOGICAL 



well to take this part by stages. From Kondundu to Kokaro the country consists 

 of a large plateau, from which huge granitic bosses arise on all sides. The vege- 

 tation is scanty, and tall grass predominates. The following are the records for 

 G. palpalis on this route : — (1) At Telebo on the River Buo, (2) at Kenewa on 

 the River Mansai, (3) very abundant at the River Bah", (4) at a stream near 

 Beraia, (5) at the River Sangha ne'ar Kokaro. On the road from Kokaro to Ka 

 Yima, the same species was obtained at : — (1) a small river near Bumbanya, (2) 

 the River Sumunyi, and (3) Ka Yima. Tahanus besti var. arbucklei was also 

 found at Bumbanya, and Hippo centrum murphyi at Ka Yima. 



Between Ka Yima and Iamadu, the country is undulating, and this may be 

 regarded as the southern end of the Loma Mountain region. The vegetation 

 is scanty and grass predominates, except on the banks of rivers and streams, 

 where there is heavy bush and high shady trees. Iamadu stands on the bank of 

 the River Bafi. Hippocentrum murphyi, Glossina palpalis, and Simulium dam- 

 nosum were found here. Never have I seen the last-named species in such 

 enormous numbers ; they rose in black clouds from a small stream which runs 

 into the River Bafi. 



Between Iamadu and Jahama Glossina fusca was found in thick bush on a 

 ridge which forms the watershed between the Rivers Bafi and Moa. G. pal- 

 palis was obtained shortly after the crossing of this ridge at the base of the 

 Nimmini Mountains. The trek from Jahama to Panguma parallel with the 

 Nimmini Mountains was very uninteresting. Only one blood-sucking insect was 

 seen, namely, G. palpalis at the River Woa (a tributary of the Moa), north of 

 Panguma. At Panguma itself, Haemaphysalis leachi, Rliipiceplialus sanguineus, 

 and Ctenocephalus felis were obtained from dogs. 



At Hangha G. palpalis was found near the railway line, and on dogs, H. leachi 

 and Rhipicephalus simus were abundant. 



0±.) The Sierra Leone Government Railway. 



This railway runs from Freetown to Pendembu, a distance of about 230 miles, 

 in an almost easterly direction ; a branch line extends north-east from Boia 

 Junction, 65 miles from Freetown, to Makump, where it crosses the Rokell 

 River. The country through which the main line passes rises gradually from 

 Freetown to the terminus ; there are extensive clearings on both sides of the line 

 and numerous swamps are crossed ; in places oil palms are cultivated, but rice is 

 the staple crop in the vicinity of the railway. 



As has been shown elsewhere, the rivers of the Protectorate flow from north- 

 east to south-west, and consequently the railway crosses them all, with the 

 exception of the Great and the Little Skarsies and the Rokell. The Rivers 

 Jong and the Bum or Sewa are navigable for large canoes at the height of the 

 rains from the sea to the railway. 



From Freetown, the line passes along the north-eastern side of the Peninsula 

 at the foot of the Sierra Leone Mountains to Waterloo. Several ravines are 

 crossed and the sides of the mountains are densely wooded ; here and there steep 

 waterfalls occur in the ravines, and the general effect of picturesqueness and 

 grandeur is characteristic of this part of the line. 



