244 



CICHLlDiE. 



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 ; mouth moderately large, 

 I width of head, extending to below anterior border of eye ; teeth in 

 6 series, outer moderately large, 40 in upper jaw ; 3 or 4 series of scales 

 on the cheek, width of scaly part less than diameter of eye. Gill-rakers 

 short, 8 on lower part of anterior arch. Dorsal XVII 9 ; last spine 

 longest, not quite J length of head, f longest soft rays. Anal III 8 ; 



Tilapia Uvingstonii. 

 Type (P. Z. S. 1899). 



third spine a little shorter than last dorsal. Pectoral f length of head, 

 not extending to origin of anal. Ventral reaching origin of anal. 

 Caudal rounded. Caudal peduncle as long as deep. Scales strongly 

 denticulate, 33 '^ ; lateral lines f{_l2- Brownish above, with 7 dark 

 bars, the first on the nape, the penultimate on the caudal peduncle, 

 the last at the root of the caudal fin ; two round white spots on the 

 anal fin. 



Total length 73 millim. 



Zambesi C?). 



1. Tviie. Zambesi Expedition. Dr. Livingstone (C.) ; 



Earl Russell (P.). 



7G. TILAPIA ZEBRA. 

 Bouleng. Proc. Zool. Soc. 1^91^, p. 137, pi. xii. fig. 2 ; Peliegr. Mem. Soc. Zool. 

 France, xvi. lUOl, p. 343. 

 Depth of body 2} times in total length, length of head 3j times. 

 Head 1§ times as long as broad ; snout with straight upper profile, 

 much broader than long, a little shorter than postocular part of head, 

 IJ diameters of eye, which is 4 times in length of head, 1^ times in 



