178 FISHES FROM LAKES TANGANYIKA AND KIVU. 



PLATE XX. 



Fig. 1. Gephyrochromis moorii, p. 156. 



"Fig. 1 a. „ „ Open mouth. X 3. 



Fig. 2. Asprotilapia leptura, p. 159. 



Fig. 2 a. „ „ Lower view of head. X Ig- 



Fig. 2 h. „ „ Mouth. X 4. 



Fig. 3. Mastacemhelus frenatus, p. 159. 



Fig. 4. „ toeniatus, p. 160. 



