C1CHLID.E. 



32 ( J 



30. TILAPIA MELANOPLEURA, A. Dnm. 



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. 101. 



Tilapia margaritacea. 



Type. 



41 a. TILAPIA MARGARITACEA, sp. n. 

 Depth of body 2 to 2\ times in total length, length of head 2f to 

 3 times. Head 1|- 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 preeorbital ; mouth f to f width of head, 

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



