The Freshwater Fishes of South Africa. 509 



of scales on the cheek, width of scaly part equals diameter of eye. 

 Gill-rakers short, 8 to 10 on lower part of anterior arch. 



Dorsal xiv 9-10 ; last spine longest, f length of head ; longest soft 

 rays ^ to | length of head. Pectoral !j to f length of head, not reaching 

 vertical of origin of anal. Ventral reaching to vent or nearly to origin 

 of anal. Anal iii 7-S ; 3rd spine as long as or a little shorter than 

 last dorsal spine. Caudal rounded ; caudal peduncle as long as deep. 



Scales finely denticulate, 27-33 J 2 ; lateral lines J-j-JJ. 



Colour (of preserved specimens), brown or reddish-brown, with 

 more or less distinct dark and light spots on dorsal and caudal fins ; 

 anal with a few large round white spots ; a more or less distinct dark 

 baud from below the eye to the angle of the mouth ; a dark opercular 

 spot. 



:.; v 



A. 



j." 1 ' ' / *':)*' -i^" ; 

 *tv ' \ 1 .- -A*; .' 



. . 



-^4 



FIG. 134. Tilapia callipterci. Typo. 



One specimen, 57 mm. in length, from Umgeni River, Natal. 

 One specimen, 63 mm. in length, from Kuruman, Bechuanaland 

 (E. Moffatj. 



* 25. TILAPIA LIVINGSTONII, Blgr. 



Bouleng., Proc. Zool. Soc., 1899, p. 134, pi. xi, fig. 2, and Freshw. 

 Fish. Africa, iii, p. 243, fig. 162 (1915) ; Pellegr. Mcin. Soc. Zool. 

 France, xvi, 1904, p. 341. 



"Depth of body scarcely greater than length of head, 3 times in 

 total length. Head twice as long as broad, upper profile forming a 

 strong curve ; snout broader than long, shorter than postocular part 

 of head, as long as eye, which is 3J times in length of head and 

 slightly exceeds interorbital width or least depth of praeorbital; 



