Page. 

 Ceroplastes ugandae,'S&^Bi., stigmatic cleft, dorsal pores, parastigmatic glands and 



spine of stigmatic cleft ... ... ... ... ... ... ... ... 94 



Cerqptos^es (/aZeates, Newst., antenna and stigmatic cleft ... ... ... ... 95 



„ wnsoTOozdes, Newst., young adult $, ventral view ... 96 



Ceroplastodes gowdeyi,'SGV!e,i.,-p\xpa.r\a, oi. $ and $ 98 



„ ,, „ young adult $ and details of old $ ... ... 99 



Lecaniodiaspis africana, Newst., details of $ ... ... ... ... ... ... 101 



Aonidia glandulosa, Newst. : adult $ ; margin of pygidium ; nymphal (second 



stage) ? 103 



Pseudoeriopsylla nyasae, 'Newsi., 9,wing ... ... ... ... ... ... 105 



ff/ossi«a to6cMi?/o;'mis, Westwood, male armature 108 



,, medicorum, Austen, male armature ... ... ... 109 



Views of the haunts of Glossina tachinoides and G. morsUans in Bornu, Northern 



Nigeria, visited by Dr. B. Moiser 120, 121, 122, 123, 124, 125 



Plan of town of Lagos, S. Nigeria 128 



Haplochilus grahami, Blgr., $ and $ 138 



Photography of Diptera ; apparatus in position 153 



Arrangement of mirrors and reflector for illuminating the object to be photo- 

 graphed 157 



Chrysops mag7iifica, Austen, ? ... ... ... ... ... ... 162 



„ centurionis, Anateu, ^... ... ... ... ... ... 164 



„ cmia, Austen, $ ... ... ... ... ... ... 165 



riippobosca hirsuta, Austen, ? ; scutellum of Hippohosca hirsuia var. neavei, 



Austen ; head and thorax of 3. maculata, Leach ... ... ... ... 169 



Views of Gambia, visited by Dr. Jas. J. Simpson 



190, 191, 196, 197, 198, 199, 202, 203, 208, 209, 225 



Surveying launch " Kose " — to show effective mosquito-proofing- ... ... ... 226 



Diagrams to illustrate the construction of " Cushion " envelopes 229 



Ochlerotatus hirsutus, Theo., $ ; side view of head ... 249 



Manscnioides uniformis, Theo., $ ; side view of head ... ... ... ... 254 



Culex quasigelidus, Theo., $ ; side view of head ... ... ... 258 



Legs of Culex quasigelidxts, Theo. ; C. duttoni, Theo. ; C. theileri, Theo. ; and 



C. univitlatus, Theo 260 



Dorsal view of thorax of : Culex quasigelidus, Theo., 9 i Culex pruina, Theo., 9 ; 



Culex ornatothoracis, Theo., 9 264 



Jiend of Chimaeropsylla potis, ^oiha., $ ... ... ... 269 



Chimaeropsylla poiis, clasping organs of $ , and abdominal segments of $ 



(2 figures) 272 



Tabanus necopinus, Austen, $ ... ... ... ... 279 



„ pertinens, Austen, $ ; head of $ from above ... ... 286 



Dorsal view of iarva of Glossina morsilans, Westw. ... ... ... 293 



Puparium of (TZoss2na mo?'S27a?!s, Westw. (2 figures)... ... 295 



Typical open grass country in Northern Nigeria 329 



Another view of the Baobab tree ehown in Plate XX, Fig. 2 359 



Head and thorax of Loxaspis mirandus, Roths. ... 363 



