2GG 



CICHLIDJE. 



94. TILAPIA GRANDOCULIS. 

 Bouleng. Tr. Zool. Soc. xv. 1899, p. 94, pi. xix. fig. 6, Ann. Mus. Congo, Zool. i. 



p. 150, pi. liv. fig. 6 (1900), Poiss. Bass. Congo, p. 477 (1901), and Tr. 



Zool. Soc. xvii. 1906, p. 573. 

 Ectodus face, Vaill. Bull. Mus. Paris, 1899, p. 221, and Res. Scient. Voy. E. Foa, 



p. 561 (1908). 

 Ophthalmotilapia face, Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 345. 



Depth of body 3 to 3f times in total length, length of head 3 to 3£- 

 times. Head not quite twice as long as broad ; snout short and 

 rounded, with convex upper profile, broader than long, as long as 

 postocular part of head ; eye 1\ to 2f times in length of head, a little 

 exceeding interorbital width, more than twice as long as least praeorbital 



Fi<r. 181. 



Tilapia grandoculis. 

 Type (Tr. Z. S. 1899). 



depth; mouth small, -| to f width of head, extending to between nostril 

 and eye ; teeth very small, in 3 to 5 series, outer obtusely pointed or 

 bi- or tricuspid, 60 to 70 in upper jaw ; 2 to 4 series of very small scales 

 on the cheek, width of scaly part not half diameter of eye. Gill-rakers 

 short, 14 to 17 on lower part of anterior arch. Dorsal XIII- 

 XIV 13-14 ; spines feeble, equal in length from the seventh, which 

 measures about f length of head ; longest soft rays about ^ length of 

 head. Anal III 9-10 ; third spine stronger but shorter than dorsals. 

 Pectoral as long as or a little longer than head, reaching origin of anal. 



