CICHLID.^. 32 U 



30. TILAPIA MELANOPLEURA, A. Diim. 

 Pellegr. Poiss. Bass. Tchad, p. 134, fig. (1914). 

 Add:— 



146-155. Ad. & yg. N. Sherbo district, Sierra N. W. Thomas, Esq. (P.). 



* Leone. 



156- Yg. Victoria, Sierra Leone. 



157-158. Hgr. & yg. Sabi R., Transvaal. S. African Museum (P.). 



34. TILAPIA ZILLII, Gerv. 

 Pellegr. op. cit. p. 133, fig. 



Fig. 191. 



Tilapia margaritacea. 



Type. 



5 

 6- 



41 a. TILAPIA MARGARITACEA, sp. n. 

 Depth of body 2 to 2j times in total length, length of head 2| to 

 3 times. Head If to 2 times as long as broad ; snout with straight or 

 slightly concave upper profile, broader than long, as long as or a little 

 longer than eye, a little shorter than postocular part of head ; eye 3 

 (young) to 4 times in length of head, f to -f interorbital width, equal to 

 or a little more than depth of prseorbital; mouth f to f width of head, 

 extending to between nostril and eye ; teeth small, in 3 or 4 series, 



