TILAPIA. -33 



an even curve ; snout rounded, as long as broad, as long as eye, which is 

 3^ to 3^ times in length of head, equals interorbital width, and exceeds 

 least depth of praeorbital ; jaws equal in front ; mouth extending to 

 below anterior border of eye, or not quite so far ; teeth small, in 3 or 

 4 series, 40 to 54 in outer series of upper jaw ; 3 or 4 series of scales on 

 the cheek, width of scaly part less than diameter of eye. Gill-rakers 

 moderately long, 10 to 12 on lower part of anterior arch. Dorsal XV- 

 XVI 8-10; spines slightly increasing in length to the last, which 



¥'m. 153. 



Type (Deutsch. Z.-Afr. Exped.). 



measures J to \ lt.nigih of head ; longest soft rays ^ to f length of head. 

 Anal 111 7-9, third spine as long as or a little shorter than last dorsal. 

 Pectoral as long as or a little shorter than head, extending to vertical of 

 origin of anal, or not quite so far. Ventral reaching vent or anal in 

 female, a little farther in male. Caudal truncate. Caudal peduncle 

 1^ to 2 times as long as deep. Scales rather strongly denticulate, very 

 small on pectoral region, 31-34 jg^ ' lateral lines xuirj^- Female 

 uniform brownish above, silvery below ; male with a vertical black bar 

 below the eye, the gular and ventral surface brown or blackish, the 

 ventrals black ; one or two large bright ocellar spots sometimes present 

 on the anal. 



Total length 110 millim. 



Lake iilbert Edward. — Types in Berlin Museum. 



1-5, C. Types. L. Albert Edward. Dr. H. Schubotz (C.) ; 



German C. African Ex|»e(l. 

 7. Skel. „ ,. ,, 



