256 



CICHLID.E. 



rather deeply emarginate. Caudal peduncle IJ times as long as deep- 



Scales finely denticulate, 34-35 



4-5 

 14 ' 



lateral lines 



23-24 



Pale brown 



above, silvery white beneath ; five dark brown cross-bars, broken up 



I'ilajjia rostrata. 

 Type (P. Z. S. 1899). 



into large spots ; a small dark brown opercular spot ; a large dark 

 brown spot at base of caudal ; fins white, dorsal sometimes with small 

 round dark spots. 



Total length 210 millim. 



Lake Nyassa. 



1. Tvpe. L. Nyassa. Miss M. Woodward (C.) ; 



Miss S. C. McLangl.lin (P.). 



2, M. „ Pi-of. J. E. S. Moore (C). 



86. TILAPIA DAllDENNII. 

 Bouleng. Tr. Zool. Soc. xv. 1899, p. 92, pi. xx. fig. 1, Ann. Mas. Congo, Zool. i. 



p. 150, pi. Iv. fig. 2 (1900), and Poiss. Bass. C^ongo, p. 472 (1901) ; Pellegr. 



Mem. 8oc. Zool. France, xvi. 1904, p. 3-±2 ; Bouleng. Tr. Zool. Soc, xvii. 



1906, p. 572. 

 Depth of body 2f to oj times in total length, length of head 3 to 3^ 

 times. Head 2 to 2J times as long as broad, with strongly curved 

 u[)per profile ; snout rounded, as long as broad or a little broader than 

 long, as long as or a little longer than postocular part of head, 1 to 1^ 

 times as long as eye, which is 3| to 3^ times in length of head, equals 

 or nearly equals interorbital width and exceeds least prisorbital depth ; 

 mouth moderate, f to § width of head, extending to between nostril 

 and eye ; teeth small, in 4 or 5 series, 50 (young) to 68 in outer series 



