TILAPIA. ] 



/ 'J 



beneath, uniform or with more or less distinct dark bars in the young; 

 a blackish opercular spot; soft dorsal with dark and light spots forming 

 oblique streaks, with a large black spot at the base of its anterior part 

 in the young. 



Total length 300 millim. 



Senegal to Gaboon. — Type in Paris Museum. 



1-10, 11-10. A.!., St. Louis, Senegal. M. P. Delliez (C). 



ligr., & yg. 



20. Skcl. 



21. Hgr. Siicred Lake, Biicuinachi, C. Bcddingion, Esq. (P.). 



nr. Kumasi R., Ashantee. 



22. Yg. Sapelle, Niger Delta. Mr. J. Paul Arnold (C). 



23. 24-33. Hgr. & (.!ioss R. district, Old Calabar. Major W. A. C. Cockburn 



31. Hgr. Menie R., Cameroon. Mr. G. Linnell (C.) ; 



Prof. E. L^nnberg (P.). 

 35-3G. Ad. JaR. at Efayong,S. Cameroon. G. L. Bates, Esq. (C). 



37. Hgr. Nyong R. at Akonolinga, „ 



S. Cameroon. 



38. Hgr. Gaboon. 



39-40. Types of W. Africa. Haslar Collection. 



Chrom. micro- 

 cephalus. 



This species is very nearly connected with T. galilcea. 



16. TILAPIA MULTIFASCIATA. 



Chromis muUifasciaivs, Giintli. Proc. Zool. Soc. 1902, ii. p. 333, pi. xxxi. 

 Tilapia multifasciuta, Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 316. 



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

 2| times. Head If to 2 times as long as broad; snout rounded, with 

 straight or convex upper profile, a little broader than long, as long as or 

 a little shorter than postocular part of head ; eye 3 (young) to 4 times in 

 length of head, 1 (young) to 1^ times in interorbital width, as long as or 

 a little longer than praeorbital depth ; mouth rather small, o ^o f width 

 of head, extending a little beyond vertical of nostril ; teeth in 3 (young) 

 to 5 series, 50 (young) to 90 in outer series of upper jaw; 2 or 3 series 

 of scales on the cheek, width of scaly part less than diameter of e}e. 

 Gill-rakers short, 18-21 on lower part of anterior arch. Dorsal XV- 

 XVI (rarely XIV) 12-13; spines subequal from the sixth, or last 

 longest, about | length of head ; longest soft ray \ to § length of head. 



