IX 



ILLUSTRATIONS IN THE TEXT. 



Curves showing rainfall in Ilorin Province 



Umoru, a Fulani of Yola, native collector 



Sketch-map of Oyun Eiver showing point at which Tsetse-Flies were taken 



Plan of Offa showing Tsetse -haunt 



Sketch-map showing distribution of Fulani cattle in Ilorin Province 



Ceronema africana, Macfie ; females with ovisacs in situ 



„ ,, $ — derm-cells, glands, spines, antenna, tarsus and anal 



lobes ; <$ puparium 

 „ „ larva — antenna, stigmal spines, spinnerets, anal segment 



and caudal setae 

 Linognathus limnotr agi, Cummings, $ .. 



„ caviae-capensis (Pallas) $, 38 ; <$ . . 



Trimenopon echinoderma, Cummings, $ . . 

 Laemobothrium opisthocomi, Cummings, <$ ; head, pronotum and terminal 



segments of $ 

 Mansonioides uniformis (Theo.), hypopygium .. 

 ,, africanus (Theo.), hypopygium .. 



Culex pipiens, L., harpes and harpagones 



,, fatigans, Wied., harpes and harpagones .. 

 „ pallidocephalus, Theo., hypopygium 

 ,, mirificus, Edw., hypopygium 

 leery a longisetosa, Newst. 



Dactylopius obtusus, Newst., with cephalic portion of adult $ . . 

 Stictococcus govedeyi, Newst., 70 ; spines of <$ & $ larvae 

 Ceroplastes coniformis, Newst., 72 ; antenna and leg of adult $ 

 Lecanivm filameniosum, Newst., integument and antenna of $ 

 Aspidiotus gowdeyi, Newst., pygidium and squamae 

 Gymnaspis africana, Newst. ; adult $ showing fringe of pygidium 

 Chionaspis unilateralis, Newst. ; young adult $ showing tubercles, spin 



nerets, pygidium and rudimentary antenna 

 Anagrus flaveolus, Waterh. 

 Dermanyssus {Liponyssoides) muris, Hirst ; dorsal view of $ 



„ ,, ,, „ $ ; tarsi of third and fourth 



legs, chelicera 

 Laelaps echidninus, Berlese, $ ; ventral view 



,, ,, ,, $; side view of chelicera 



Anopheles tessellaius, Theo. ; egg and newly hatched larva, 131 ; head and 

 thorax of mature larva, inner anterior clypeal hair, palmate hair of sixth 

 abdominal segment and leaflet of same 



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