186 

 G-14. Ad., bgr., 



15. Skel. 



lG-17. Two of the 



types. 



CICHLID.Ii. 



Cliiloango, Portug. Congo. 



L. Obeke, Upper Congo. 



Dr. W. J. Ausorge (C). 

 M. r. DoUiez (C). 



25. TILAPIA MARI^. 

 Boulcng. Proc. Zool. Soc. 1899, p. 122, pi. xi. fig. 1 ; Pellegr. Mem. Soc. Zool. 

 Franco, xvi. 1904, p. 323. 

 Depth of body If to 'if times in total length, length of head 2f to 3 

 times. Head If to '2 times as long as broad, with convex upper 

 l)rofile; snout rounded, about 1^ times as long as broad, as long as 

 or a little shorter than postocular part of head ; eye 2f (young) to 

 3i times in length of head, 1 to 1-^ times in interorbital width, 



Fig. 120 



Tilapia marice. 

 Oguta. 



exceeding prgeorbital depth ; mouth rather small, f to f width of 

 head, extending to between nostril and eye ; teeth in 3 to 5 series, 

 outer very small, with very slender shafts, movable, 50 to 64 in upper 

 jaw ; 3 or 4 series of scales on the cheek, width of scaly part less than 

 diameter of eye. Gill-rakevs short, 13 to 15 on lower part of anterior 

 arch. Dorsal XVI (rarely XV) 12-13; spines subequal from the fifth, 

 or last longest, ^ to I length of head ; longest soft ray | to once length 

 of head. Anal 111 10-11 ; third spine as long as or shorter than last 



