HAPLOCHEOMIS. 



303 



Tilapia flavil-josephi, Bouleiig. 1. c. 



Paratilapia wingatii, Bouleng. Ann. & Mag. N. H. (7) x. 1902, p. 2G4. 



Astalotilapla desfontainesi, Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 300, 



and xxii. 1910, p. 291. 

 Tilapia {Ctenochromis) sparsidens, Hilgend. Zool. Jalirb., Syst. xxii. 1905, p. 408. 

 JIaplochromis desfontahien. Bouleng. Fish. Nile, p. 501, pi. xc. fig. 3 (1907), and 



Ann. Mus. Genova, (3) v. 1911, p. 71. 



Depth of body 2J to 3 times in total lengtli, length of head 2| to 3^ 

 times. Snout with straight or slightly concave profile, 1 to 1\ diameters 

 of the eye, which is 3^ to 4^^ times in length of head and equals or 

 slightly exceeds interorbital width ; least depth of prsBorbital § to once 

 diameter of eye; jaws equal in front, or lower slightly projecting; 



Fig. 205. 



Haplochromis desfontainesii. 

 Tunisia (P. Z. S. 1899). 



maxillary extending to below anterior border or anterior third of eye ; 

 outer teeth rather large, conical or more or less distinctly bicuspid in 

 the adult, usually bicuspid in the young, 30 to GO in upper jaw, 

 followed by 2 or 3 series of small tricuspid teeth ; 3 to 5 series of scales 

 on the cheek, width of scaly part nearly equal to or greater than 

 diameter of eye. Gill-rakers very short, the larger sometimes T-shaped, 

 7 to 10 on lower part of anterior arch. Dorsal XIV-XVI (rarely XIII) 

 9-10 (rarely 8, 11, or 12) spines, subequal from the tenth or increasing 

 in length to the last, which measures f to f length of head ; longest 

 soft rays | to nearly once length of head. Anal III (rarely IV) 8-10 

 (rarely 11); third spine as long as or a little shorter than last dorsal. 

 Pectoral § to nearly once length of head. Ventral reaching vent, origin 



