242 



CICHLID-E. 



above, somewhat lighter beneath ; seven ill-defined black bars on the 

 body, and a vertical black bar below the anterior third of the eye; a 

 black opercular spot ; dorsal and ventral fins dark brown or black, the 



Fig. 160. 



Tilapia nigricans. 

 Type (F. N.). 



other fins dark greyish brown, the anal often with 3 or 4 orange ocellar 

 spots. 



Total length 140 millim. 



Lake Victoria and Victoria Nile. 



1-2. Types. Entebbe. Mr. E. Degen (C). 



3. Ad. Kakindu, Victoria Nik. Dr. E. Bayon (C.) ; 



Genoa Museum (P.). 



4. Skel. „ „ „ „ 



74. TILAPIA SIMOTES. 

 Bouleng. Ann. Mus. Genova, (3) v. 1911, p. 75, pi. iii. fig. 4. 



Depth of body equal to or a little greater than length of head, 2f to 

 3 times in total length. Head twice as long as broad, upper profile 

 forming an even, strong curve; snout broadly rounded, much broader 

 than long, as long as eye, which is 8-j to Z\ times in length of head, 

 equals interorbital width, and exceeds least depth of prseorbital ; upper 

 jaw projecting beyond lower; maxillary extending to below anterior 

 border of eye, or a little beyond ; teeth small, very slender, closely set, 

 in 6 to 8 series, outer bicuspid, others tricuspid ; 68 to 80 teeth in 

 outer series of upper jaw ; 3 or 4 series of scales on the cheek, the depth 

 of the scaly part below the eye a little less than diameter of latter. 

 Gill-rakers rather short, 8 or 9 on lower part of anterior arch. Dorsal 

 XV-XVI 9-10; spines increasing in length to the last, which measures 



