TILAPIA. 14p 



I). XV-XVI 10-14; A. Ill 0-11 ; Sc. 29- 

 Il-14' 8-12 gill-rakers on lower part 



of anterior arch ; caudal truncate or feebly [p. 190. 



einarginate 30. T. melanopleura, A. Dum., 



D. XV 14 ; A. Ill 10-11 ; Re. 30 jj ; 14 gill- 



rakers ; caudal rounded 31. T. meeki, Pellegr., p. 194. 



D. XIV-XVII 12-13; A. Ill 10-11 ; Sc. 2S- 



31 ' ' ; 12-15 gill-rakers ; caudal 



rounded 32. T. cobra, Blgr., p. 194. 



** Depth of body 2£ to 2J times in total length. 



t Pectoral shorter than head (f to |) ; 13-15 gill-rakers on lower 

 part of anterior arch. 

 D. XVI-XVII 12 ; A. Ill 8-9 ; Sc. 30- 



32 "'■?_' ;', ; caudal truncate 33. T. brevtmanus, Blgr., p. 19l>. 



ft Pectoral as long as head, or a little longer or a little shorter ; 

 8-12 gill-rakers. 

 + Caudal not scaly. 

 D. XIV-XYI 10-13; A. Ill 7-10 ; Sc. 28- 



33 ^pfe: ; caudal truncate or rounded . . 34. T. zillii, Gerv., p. 197. 

 I). XV-XVI 11-12 ; A. Ill 8 ; Sc. 26- 



29 "' ; caudal truncate do. T. koltcB, Lonnb., p. 200. 



D. XV-XVI 11-13 ; A. Ill 9 ; Sc. 30- 



31 TTTTy ', caudal feebly einarginate, outer 



rays somewhat produced . . . . . . 3G. T. gvineensis, Blkr., p. 201. 



%% Caudal scaly nearly all over, rounded. 

 D. XV-XVI 8-10 ; A. Ill 8-9 ; Sc. 30- 



32 — -p, ; caudal peduncle as long as deep 



or a little deeper than lung 37. T. tholloni, Sauv., p. 202. 



D. XVI-XVII 12-13 ; A. Ill 9-10 ; Sc. 30- 



31 ~ * ; caudal peduncle much deeper 



than long 38. T. cliristyi, Blgr., p. 204. 



y3. 17 or 18 dorsal spines ; third anal spine a little longer than longest 

 dorsal ; 7 soft anal rays ; 3 or 4 series of scales on the cheek ; 

 pectoral shorter than head ; 10-11 gill-rakers on lower part of 

 anterior arch ; caudal rounded, feebly einarginate, covered with 

 scales. 

 D. XVII-XVIII 9-10 ; A. Ill 7 ; Sc. 30- 



32 ^ ; depth of body 2 A- to 2f times in 



total length . 39. T. bilineata, Pellegr., p. 204. 



