Vlll 



ILLUSTRATIONS IN THE TEXT. 



the 



distribution of 



primary larva 



Pupae of: 



Culex fati gains, Wied. 

 ,, guiarti, Blanch. 

 ,, invidiosus, Theo. 

 ,, thalassius, Theo. 

 ,, tritaeniorhynchus, Giles 

 Cyathomyia •■ fusca, Theo. .. 

 Eumelanomyia inconspicuosa, Theo. 

 Mimomyia mimomyiaformis, Newst 



,, splendens, Theo. 



Oclilerotatus albocephalus, Theo. . . 

 Stegomyia metallica, Edw. 

 ,, nnilineata, Theo. 



Sketch-map showing five years gradual increase in 



Phytalus smitlii 

 Sy states maynei, Mshl., sp. n., $ • • 



,, ramosus, Mshl.. sp. n., <$ 

 Alcides theobromae, Mshl., sp. n., $ 

 Leptohylemyia coarctata, Fall., mouth-parts of Kurdjumov's 



122 ; mouth-parts of a full-grown larva . . 

 Mansonioides africanus, Theo., details of larva siphon 

 Head, end of abdomen, and mentum of : — 

 Culex guiarti, Blanch. 

 ,, thalassius, Theo. 

 Cyathomyia fusca, Theo. . . 

 Mimomyia splendens, Theo. 

 Oclilerotatus albocephalus, Theo. 

 ,, apicoannulatus, Edw 



,, minutus, Theo. 



Lateral view of the heads of : — 



Dirhinus ehrhorni, Silv. (left) 



,, inflexus, Waterst. (right) 

 Conradiina suspensa, Bezzi, sp. n., wing 

 Phacochlaena fasciolata, Loew, wing 

 Ocneros mundus, Loew, wing 



Pangonia longirostris, Hardw., $, 254 ; Q, details of head, 25S-261 ; 

 details of maxilla, 262, 263 ; o, labrum-epipharynx, 263 ; 

 pharynx 

 Palaeopus costicollis, Marshall, sp. n., q 

 Details of : — - 



Aphis acetosella, Theo, nom. n. 

 „ bauhiniae, Theo., sp. n . 

 ,, buddleiae, Theo., sp. n. 

 ,, durantae, Theo., sp. n. 

 ,, ficus, Theo., sp. n. 

 ,, mathiolae, Theo., sp. n. 

 ,, mathiolellae, Theo., sp. n. 

 ,, pomonella, Theo. 

 ,, pruniella, Theo., sp. n. 

 ,, tamaricis, Theo., sp. n. 

 ,, zizyplii, Theo., sp. n. 

 Hyalopterus insignis, Theo.. sp. n. 



6 

 hypo 



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