VI. 



PLATES. 



PAGE. 



I. to IV. Views in West Africa showing early stages of certain 



Mosquitos and their haunts facing 1 54 



V. Wings of African Trypaneidae „ 252 



VI. Mouth-parts of Pangonia longirostris, Hardw „ 268 



MAPS. 



PAGE. 



I. Map showing the northern and western limits of Gloss ina 



morsitans in the southern Belgian Congo to face 168 



II. Map showing the distribution of Glossina along the Lualaba- 



Tanganyika Kailway „ 175 



