2,')4 Mr. C T. Reiran — (Jlassijication of 



/3. 20 to 30 scales in a longitudinal series; caudal peduncle 

 not longer than deep. 

 Scales on chest rather small ; 5 or 6 scales between 



pectoral ami pelvic fins 10. swynnerto7ii. 



Scales on chest larger ; 3 or 4 (rarely o) scales be- 

 tween pectoral and pelvic fins 11. moffatt. 



II. Congo. 



A. 4 or o scales from origin of dorsal to lateral line. 

 10-13 gill-rakers on lower part of anterior arch. 



D. XTV-XVI 10-11, A. Ill 6-7 12. fasciafus. 



7 or 8 gill-rakers on lower part of anterior arch. 



I). XV-XVI 8-10. A. Ill 7 13. stigmatogenys. 



7 gill-rakers on lower part of anterior arch. D. XII 9. 



A. Ill 6 14. oligacanthus. 



B. 6 or 7 scales from origin of dorsal to lateral line ; 10-12 



gill-rakers on lower part of anterior arch. D. XV-XVII 

 8-10. A. Ill 7-8. Cheek covered with scales. 



, 15. moerue7isu. 



C. 8 or 9 scales from origin of dorsal to lateral line; 10 gill- 



rakers on lower part of anterior arcli. D. (XVI) XVII- XIX 

 8-9. A. Ill 7-8. Lower part of cheek naked. 



16. j)dly acanthus. 



III. North and East Africa; Syria. 



A. Caudal peduncle much longer than deep . . 17. fuelhhorni. 



B. Caudal peduncle about as long as deep. 



1. Lower part of cheek naked 18. pectoralis. 



2. Cheek covered with scales. 



a. 3 or 4 scales between pectoral and pelvic fins ; teeth in 

 3 or 4 series. 



30 scales in a longitudinal series 19. gigliolii. 



25 to 2S scales in a longitudinal series 20. multicolor. 



h. 5 to 9 scales between pectoral and pelvic fins. 



a. Pharyueeal teeth small and compressed, the middle ones 

 sometimes larger and subconical. 

 Teeth in 2 series. D. XIII-XV 9-10. A. Ill 



8-9. 29 or 30 scales in a longitudinal series . . 21. bloyeti. 

 Teeth in 3 or 4 series. D. XIV-XV 10. A. Ill 



8-10. 30 scales in a longitudinal series 22. wingatii. 



Teeth in 3 or 4 series. D. XIV-XVI 10-11. A. 

 Ill 9-11. 31 to 34 scales in a longitudinal 



series 23. desfontainesii. 



(i. Middle phar^-ngeal teeth stout and blunt. 

 Teeth in 2 or 3 series. D. XIV 9. A. Ill 8. 28 



scales in a longitudinal series 24. Jlavii-josephi. 



1. Haplochrotnis giardi, VeWegr., 1904. 



Tilapia giardi, Bouleng. Cat. Afr. Fish. iii. p. 221, fig. 144. 

 Pandilajna carlottce, Bouleng. t.c. p. 353, fig. 239. 



Total length 255 mm.; three specimens examined. 

 Zambesi. 



