TILAPIA. HI 



** Oaiulal peduncle deeper tlian lono;. 

 t 18-27 oill-nikers; Sc. 29-34 ^. 

 D. XV-XVII 12-14; A. Ill 10-12; Sc. 30- 

 34 '^jztr ' "louth extending to below 



nostril, or slightly beyond 13. J. galihea, Art., p. 169. 



I). XV-XVII 11-13; A. Ill 9-11; Sc. 29- 



33 -n--r?i ) mouth extendino; to between 

 i2-lo " 



nostril and eye 14. 2'. andersoiiii, Cast., p. 171. 



-13" * 



ft ]r)-21 oill-rakers ; Sc. 27-31 ^,, 



1 1— lo 



1). XIV-XVII 11-13; A. Ill 8-11 ; Sc. 27- 



''-1— s 



30 jios 5 15-19 gill-rakers; depth of 



body 2 to 2j times in total length, much 



greater than length of head 15. 7'. /j^m^^/o^/, A. Dum., p. 173. 



J). XIV-XVI 12-13 ; A. Ill 9-11 ; Sc. 2^- 



31 j"j^^'!, ; 18-21 gill-rakors ; depth of 



body 21 to 2.^ times in total length . . . 10. 7\ multlfasciata, Gthr., p. 175. 

 D. XV-XVI 10-12 ; A. Ill 7-9 ; Sc. 27- 



30 j|l|^ ; 15-18 gill-rakers ; depth of 



body 2\ to 2\ times in total length . . .17. T. marrocephala, Blkr., p 170. 

 7. Outer teetli rather large (44 to (10 in upper jaw) ; 3 or 4 series of 

 scales on the cheek ; 16-18 gill-rakers; caudal rounded. 

 D. XVI 13 ; A. Ill 10 ; Sc. 33 J| ; pectoral a 



little longer than head 18. T. ncf )mens'is, VeWegr., \). 178. 



I). XVI 12-13; A. Ill 9-10; Sc. 30-31^5; 



pectoral not longer than head .... 19. 7'. Aa?/yf, Pellegr., p. 1 78. 

 h. C'aiidal densely scaled ; 15-22 gill-rakers. 

 I). XVII-Xyill 11; A. Ill 10; Sc. 33- 



35 fj:Th > 3 or 4 series of scales on the 



cheek ; caudal peduncle longer than deep; [p. 180. 



caudal emarginate 20. T. axiromarginota, Blgr., 



D. XVI 10-12 ; A. Ill 8-9 ; Sc. 29-32 '^^^^', 



2 or 3 series of scales on the cheek ; teeth 



extremely slender ; caudal peduncle d€e{)er 



than long ; caudal rounded 21. T. lepidura, Blgr., p. 181. 



D. XVI 12 ; A. Ill 10 ; Sc. 29 p| ; 2 series of 



scales on the cheek ; caudal peduncle 



deeper than long ; caudal emarginate, 



pointed above, rounded beneath .... 22. T. boulencferi, Pellegr., p. 182. 



