TILAPIA. 



1G7 



little more than \ length of head. Pectoral 1 to 1£ times as long as 

 head, reaching beyond vertical of origin of anal. Ventral reaching 

 vent or origin of anal. Caudal truncate. Caudal peduncle as long as 



3.1-4 



20-22 



deep. Scales 31-32 j^j-3 ; lateral lines j^S- Dark brown above, with 

 or without very indistinct darker cross-bars, yellowish beneath ; a black 

 opercular spot ; fins brown or blackish, uniform or with oblique light 



Fig. 107. 



Tilapia ednardiana. 

 Type. I 



streaks on the soft dorsal ; young with a large ocellar spot 011 trie 

 anterior part of the soft dorsal. 



Total length 180 millim. 



Lake Albert Edward watershed of Mount Iluwenzori and Lake 

 Gangu, west of Lake Victoria. 



1-6. Types. S.E. slope of ML Ruwenzori, 



3200 ft. 



7. Skel. 

 8-13. Yg. 



R. B. "Woosnam, Esq. (C.) ; 



Ruwenzori Expedition. 

 R. B. Woosnam, Esq. (C.) ; 



Ruwenzori Expedition. 

 C. M. Woodhouse, Esq. (P.). 



L. Gangu. 



12. TILAPIA VARIABILIS. 



Chromis niloticus (non Linn.), Hilgend. Sitzb. Ges. naturf. Fr. Berl. 1888, p. 76. 

 Tilapia galilcea (non Artedi), Pellcgr. Mem. Soc. Zool. France, xvii. 1905, p. 183. 

 Tilapia variabilis, Bouleng. Ann. & Mag. N. H. (7) xvii. 1906, p. 447, Fish. Nile, 

 p. 529, fig. (1907), and Ann. Mus. Genova, (3) v. 1911, p. 76. 



Depth of body 2\ to 1\ times in total length, length of head 2§ to 

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



