LIST OF ILLUSTRATIONS. 



Facing 



Facing 



Chrysichthys brachynema ...... 



Lates microlepis ........ 



Tilapia labiata ........ 



Synodontis multipunctata ...... 



Paratilapia calliura, Ectodus longianalis and Tilapia boops 

 Paratilapia furcifer ........ 



Trematocara marginatum. ....... 



Lamprolagus modestus and Haplochilus tanganicanus 

 Bathybates fasciatus ....... 



Bathybates ferox ........ 



Judilochromis ornatus ......... 



Eretmodus cyanostictus, Telmatochromis vittatus and Lamprologus 



fasciatus ........... 



Grammatotria lemairii ......... 



Paratilapia vittata and Xenotilapia sima ...... 



Gephyrochromis moorei, Ectodus melanogenys and Tilapia grandoculis 

 Tilapia trematocephala, Paratilapia aurita and Paratilapia nigripinnis 

 Petrochromis polyodon ......... 



Lamprologus lemairii, Asprotilapia leptura and Lamprologus furcifer 

 Tilapia pleurotaenia ...... 



Tilapia dardennii ....... 



Trematocara unimaculatum and Paratilapia leptosoma 

 Lamprologus moorei ...... 



Telmatochromis temporalis ..... 



Tilapia microlipis and Tilapia rubropunctata . 

 Lamprologus compressiceps, Paratilapia pfefferi and Ectodus longianilis 

 Paratilapia dwindti, Xenotilapia ornatipinnis and Barbus serrefer 

 Tilapia microlepis and Barilius moorei ...... 



Barilius moorei and Tropheus moorei ...... 



Paratilapia stenosoma ......... 



Lamprologus elongatus, Mastacembelus taeniatus and Perissodus 



microlepis .......... 



Mastacembelus frenatus and Mastacembelus moorei .... 



Facing 



Facim 



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2>5 



CHAPTER X. 



Melania admirabilis, Fig. 1 



Living Typhobia horei, Fig. 2 . 



Semi-diagram of anatomy of Typhobia horei, Fig. 3 . 



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