508 Annals of the South African Museum. 



ing nearly to below anterior border of eve ; teeth in 3 series ; 6 series 

 of scales on the cheek. Grill -rakers short, 12 on lower part of anterior 

 arch. 



Dorsal xv 14; spines subequal from the fifth, a little less than 

 length of head. Anal iii 9. Pectoral shorter (?) than head, not 

 reaching anal. Caudal rounded (?). Caudal peduncle as long as 



deep. Scales feebly denticulate, 34 |j, lateral lines f-|. 



' 



,-- ' 





FIG. 133. Tilapia giardi. Type. 



Olive above, golden beneath ; about 10 dark transverse bands ; a 

 dark opercular spot ; soft dorsal with brownish dots. 



Total length 78 millim. 

 Zambesi." 



24. TILAPIA CALLIPTERA, Griiuth. 



Chromis calliptcrus, GTmth . Proc. Zool. Soc., 1893, p. 623, pi. Iv, 

 fig. B ; Bouleug., op. tit., 1896, p. 916. 



Chromis subocularis, part., Giiuth., I.e. p. 621. 



Ctenochromis callipterus, Pfeff., Thierw. O.-Afr., Fische, p. 19 

 (1896). 



Tilapia calliptera, Bouleng., Trans. Zool. Soc., xv, 1898, p. 4, 

 Proc, Zool. Soc., 1899, p. 132, and Freshw. Fish. Africa, iii, p. 222, 

 fig. 145 (1915) ; Pellegr., Mem. Soc. Zool. France, xv, 1904, p. 336. 



Teeth in 3 or 4 series, outer larger, 40-60 in upper jaw ; lateral 

 teeth conical but passing generally into the bicuspid teeth. Depth of 

 body 2| to 2f times in total length excluding caudal, length of head 

 2-^ to 2-f- times. Head twice as long as broad ; snout rounded, with 

 straight upper profile, as long as broad, shorter than postocular part 

 of head ; eye shorter than snout, 4 times in length of head, equal to 

 or a little less than interorbital width, a little greater than least 

 preorbital depth ; width of mouth -?, to 1 width of head, extending 

 to below anterior margin of eye, lower jaw projecting; 3 or 4 series 



