TILAPIA. 145 



I). XIV-XV 14-16 ; A. Ill 10-11 ; Sc. 29- 

 32 'Ji^ ; 11-12 gill-rakers ; depth of 

 body 2 to 2| times in total length ; caudal 

 rounded, scaly all over in the adult. . . 49. T. huettikoferi, Hubr., p. 214. 



TI. Scales with more or less distinctly denticulate edge. 

 A. Caudal rounded or truncate, not at all emarginato. 



1. Dorsal with 14 or 15 spines ; eye 3 to 4 times in length of head ; depth 



of body 2^ to 3 times in total length; caudal rounded or rounded- 

 subtruncate. 



a. Caudal peduncle not or but little longer than deep. 



a, 3 to 5 series of scales on the cheek. 



* Pectoral shorter than head. 

 D. XIV-XV 10-11 ; A. Ill (5-7 ; Sc. 29- 



30 -r^ ; caudal densely scaled at the base . 50. T. fasciata, Perugia, p. 215. 

 D. XIV-XV 9-11 ; A. Ill 8-9 ; Sc. 2S- 



31 fj^; mouth to below anterior border 

 of eye or a little beyond ; teeth in 4 to 6 



series, 50-70 in outer series of upper jaw . 51. T. hurtoni, Gthr., p. 217. 

 D. XIV-XV 10-11 ; A. Ill 8-9 ; Sc. 30- 



32 -jT- ; lower jaw slightly projecting ; 

 mouth not extending to below anterior 

 border of eye ; teeth in 2 series, about 50 



in outer series of upper jaw 52. T. acuticeps, Stdr,, p. 218. 



D. XV 9-10; A. Ill 8-9; Sc. 29-31 ^ ; 

 mouth extending to below anterior border 

 of eye ; teeth in 4 series, 40-42 in outer 



series of upper jaw 53. T. swi/nnertoiii, B\gv., ip. 219. 



** Pectoral as long as head. [p. 220. 



D. XIV 10; A. Ill 9 ; Sc. 31 ?j 54. T. adolphi-fr^derici, Blgr., 



/3. 6 series of scales on the cheek. 



D. XV 14 ; A. Ill 9; Sc. 34 ^ 55. T. giardi, Pellegr., p. 221. 



h. Caudal peduncle much longer than deep. [p. 222. 



D. XIV-XV 8-9 ; A. Ill 8 ; Sc. 28 ^ . . . 5H. T. fuellehomii, Hilg. & Popp., 



2. Dorsal with 15 to 17 spines (rarely 14) ; eye 4 to 4^ times in length of 



head in adult ; depth of body 2| to 3^ times in total length. 

 a. 7-10 gill-rakers on lower part of anterior arch ; caudal rounded. 

 D. XIV-XVI 8-10 ; A. Ill 7-8 ; Sc. 30- 



3-4 

 shorter than postocular part of head . . 57. T. calliptera, Gfbr.. p. 222. 



33 fTTo *' ^^*^^^ "* 3 to 5 series; snout 



