170 



CICHLID.^. 



of head ; longest soft ray J to once length of head. Anal III 10-12; 

 third spine as long as or a little shorter or a little longer than last dorsal. 

 Pectoral 1 to 1^ times as long as head, extending to vertical of origin 

 of anal, or beyond. Ventral reaching vent or anal. Caudal truncate 

 or feebly emarginate. Caudal peduncle deeper than long. Scales cycloid, 

 30-34 ifijl; lateral lines ]j^. Whitish to brownish or olive-green, 

 uniform or with small dark spots, or with ill-defined darker streaks along 

 the series of scales; a more or less distinct dark opercular spot; vertical 

 fins greyish or brown, \Aithout markings in the adult ; young with 5 to 

 9 more or less distinct dark bars on the body, and oblique dark streaks 



Fig. 109. 



Tilapia galilmt. 

 Khartum (P. N.). |. 



on the dorsal and anal fins ; a round blackish spot on the anterior 

 part of the soft dorsal fin in very young specimens. 

 Total length 420 millim. 



Lake Galilee and Jordan ; Nile system up to Blue Nile and Bahr-el- 

 Gebel ; Senegal, Gambia, Portuguese Guinea, Lagos, Niger. 

 1-3. Ad. L. Galilee. Gimon Tristram (0.). 



4-7. Yg. L. Mareotis. L. Lout, Esq. (C). 



Near G-het-el-Nassara, L. 

 Menzaleh. 



8. PIgr. 



