151 



ENTOMOLOGICAL RESEARCH IN BRITISH WEST AFRICA. 



IV. SIERRA LEONE. 



By Jas. J. Simpson, M.A., D.Sc. 



(IVith a Map showing the distribution of Glossina and Sleeping Sit- ha ess, and 



10 photographs by the Author.) 



(Plates XVIII.— XXII.) 



Contents. 



page. 



Introductory... ... ... ... ... ... ... ... ... ... 151 



I. Geography of the Colony and Protectorate ... 153 



(1.) Position and Extent ... ... ... ... ... ... ... 153 



(2.) Vegetation 154 



II. Climate and Rainfall ... ... ... ... ... ... ... ... 156 



III. Narrative 159 



(1.) Freetown to Port Lokko, Kaballa and back to Port Lokko ... 159 



(2.) Port Lokko to Kaballa, via Batkanu (main route) ... ... ... 16G 



(3.) Kaballa to Hangha (on the Railway) ... 107 



(4.) The Sierra Leone Government Railway ... ... ... ... 170 



(5.) Daru sub-district : — Kailahun, Dodo, Bari walla, Bendu &c. ... 174 



(6.) Daru to Bo, via Bandasuma ... ... ... ... ... ... 17G 



(7.) Bo to Moyamba, via Tungea and Makump 177 



(8.) Moyamba to Bonthe, Mafwe, Mattru and Rotifunk ... ... 179 



(9.) Rotifunk to Waterloo, via Rokell 182 



(10.) The Peninsula : — Waterloo to Freetown, via Kent ... 182 



(11.) Freetown 183 



IV. Records of Blood-sucking Insects and other Arthropods from Sierra Leone 184 



V. Vocabulary of Native Names for Insects... ... ... ... ... ... 185 



VI. Insect-borne Diseases in Man and other Animals 186 



VII. The Genus Glossina 187 



VIII. The Genus Stegomyia 188 



IX. Parasites of Mammals, Birds and Reptiles 189 



Introductory. 



The following report is the fourth of a series dealing with the blood-sucking 

 insects which are or may be implicated in the transmission of disease in man and 

 other animals. The previous reports have appeared in different issues of this 

 Bulletin* and should be consulted in conjunction with this, as many aspects of a 

 general character, which are equally applicable to all West African Colonies, 

 have been discussed there and need not therefore be reiterated here. 



The aims of the author and the methods adopted by him have also been given 

 in considerable detail in the introductory chapter in the Southern Nigeria report 

 and call for no further comment here, but the following paragraph from that 

 report may serve to give some idea of the nature of what follows. 



" The main object of the writer in order to further this investigation .... 

 was, therefore, to make as extended a tour as possible, visit the various stations, 



* I. Gambia, Vol. II., pp. 187-239. 



II. Northern Nigeria, Vol. II., pp. 301-356. 

 III. Southern Nigeria, Vol. III., pp. 137-193. 



(3230(5—2.) Wt. P 12—42. 1000. 11/13. D & S. 



