578 EXPLANATION OF THE PLATES. 



PLATE XCIV. 



Tilapia nilotica, L. 5 p. 523. Skeleton. Nile, f nat. size. a. Upper view of cranium ; 

 b. Upper pharyngeal bones ; c 9 d. Lower pharyngeal bones, upper and lower 

 views. 



PLATE XCV. 



Tilapia galilcea, Art., p. 531. Khartum. Nat. size. 



PLATE XCVL 



Petrochromis andersonii, Blgr., p. 535. Lake Albert. (Type.) Nat. size. 



PLATE XCVIL 



Tetrodon fahaka, L., p. 544. Khartum. Nat. size. With front view of head. 



PRINTED BY TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. 



