TJLAPIA. 



185 



Gill-rakers short, 12 to 15 on lower part of anterior arch. Dorsal XV- 

 XVI (rarely XVII) 9-11 * ; spines subequal from the sixth or seventh, 

 or last longest, f to not quite l length of head ; longest soft ravs f to § 

 length of head. Anal III 8-9 ; third spine i to f length of head. 

 Sectoral as long as or a little longer than head, extending to vertical of 

 ongmofanal or a little beyond. Vertical reaching vent or anal, or 

 not so lar. uauuai truncate or feebly but very distinctly emarginate. 

 Caudal peduncle deeper than long. Scales cycloid or very feebly 

 denticulate, 27-31 {}:^; lateral lines J-gg. Brown, grey, or olive, with 



Fig. 119. 



Tilapin dolloi. 

 Type (A. m; C). f. 



or without small black spots, belly white; lower half of liead often 

 black, or with ink-black spots ; young Avith ill-defined narrow dark 

 bars ; pectorals white, other fins grey or black, soft dorsal often with 

 round light spots. 



Total length 155 millim. 



Spanish Guinea to Congo. — Types in Congo Museum, Tervueren. 



G. L. Bates, Esq. (C). 



1. Hgr. 



2. Ad. 



3-5. Ad., hgr., 



&yg. 



Benito R., Spanish Guinea. 

 Sette Caina, Gaboon. 

 Landana, Portug. Congo. 



Dr. Jackson (C.) ; Hon. W. 

 RotliscIiilJ (P.). 



* 11 in one specimen from Cliiloaiigo. 



