258 



CICHLID^E. 



7-10. Ad. 



11. Skel. 



12. Hgr. 



13-14. Ad. & hgr. 

 15-23. Yg. 



Niamkolo, 



Uvira. 



Kilewa Bay. 



Mouth of Lukuga R. 



Dr. W. A. Cunnington. 



55 



Dr. L. Stappers (C). 



rig. 174. 



Tilapia oligucun thus. 

 After Steindnchner (J. c). £. 



87. TILAPIA OLIGACANTHUS. 



Bleek. Versl. Ak. Amsterd. ii. 1868, p. 309, and Poiss. Madag. p. 11, pi. iv. fig. 1 



(1874); Bouleng. Proc. Zool. Soc. 1899, p. 138. 

 Ptychochromis oligacanthus, Steind. Sitzb. Ak. Wien, lxxxii. i. 1880, p. 249, 



pi. i. ; Sauv. Hist. Madag., Poiss. p. 439, pis. xliv. fig. 4, xliv. B, fig. 1, and 



xlv. fig. 1 (1891) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 347 (part,), 



and Bull. Mus. Paris, 1907, p. 324. 

 Ptychochromis grandidieri, Sauv. Bull. Soc. Philom. (7) vi. 1882, p. 174, and 



Hist. Madag., Poiss. p. 441, pis. xliv. fig. 3 and xliv. a, fig. 5. 

 Ptychochromis madagaseariensis, Sauv. Hist. Madag., Poiss. p. 442, pis. xliii. 



fig. 4 and xliv. a, fig. 6. 

 Tilapia madagaseariensis, Bouleng. t. c. p. 138. 

 Tilapia grandidieri, Bouleng. t. c. p. 139. 



Depth of body 2 to 2 J times in total length, length of head 2| to 3 



