LIST OF ILLUSTRATIONS. xvii 
PAGE 
Cbrysichthys brachynema . . . . . . . .169 
Lates microlepis . . . . . . . . . *171 
Tilapia labiata . . . . . . . . . .173 
Synodontis multipunctata ...... Facing 174 
Paratilapia calliura, Ectodus longianalis and Tilapia boops . 175 
Paratilapia furcifer . . . . . . . . . 177 
Trematocara marginatum. . . . . . . . *179 
Lamprolagus modestus and Haplochilus tanganicanus . . 181 
Bathybates fasciatus . . . . . . . . -183 
Bathybates ferox ........ Facitig 184 
Judilochromis ornatus . . . . . . . . -185 
Eretmodus cyanostictus, Telmatochromis vittatus and Lamprologus 
fasciatus . . . . . . . . . . .187 
Grammatotria lemairii . . . . . . . . .189 
Paratilapia vittata and Xenotilapia sima ...... 191 
Gephyrochromis moorei, Ectodus melanogenys and Tilapia grandoculis 1 93 
Tilapia trematocephala, Paratilapia aurita and Paratilapia nigripinnis 195 
Petrochromis polyodon . . . . . . . . -197 
Lamprologus lemairii, Asprotilapia leptura and Lamprologus furcifer 199 
Tilapia pleurotaenia ......... 200 
Tilapia dardennii ........ Facing 200 
Trematocara unimaculatum and Paratilapia leptosoma . . . 201 
Lamprologus moorei ......... 203 
Telmatochromis temporalis ........ 204 
Tilapia microlipis and Tilapia rubropunctata . . . Facing 204 
Lamprologus compressiceps, Paratilapia pfefferi and Ectodus longianilis 205 
Paratilapia dwindti, Xenotilapia ornatipinnis and Barbus serrefer . 206 
Tilapia microlepis and Barilius moorei ...... 208 
Barilius moorei and Tropheus moorei ...... 209 
Paratilapia stenosoma . . . . . . . . .211 
Lamprologus elongatus, Mastacembelus taeniatus and Perissodus 
microlepis . . . . . . • • • - 213 
Mastacembelus frenatus and Mastacembelus moorei . . . .215 
CHAPTER X. 
Melania admirabilis, Fig. 1 . . . . . . .219 
Living Typhobia horei, Fig. 2. . . . . . . .221 
Semi-diagram of anatomy of Typhobia horei, Fig. 3 . , . .222 
B 
