458 CICHLID^. 



curved upper profile, as long as or a little shorter than eye, which is 3 

 to 3 J times in length of head and nearly double interorbital Avidth ; 

 mouth extending to below anterior border of eye ; cheek naked. Gill- 

 rakers short, 17 or 18 on lower part of anterior arch. Dorsal X-XII 

 9-11; spines increasing in length to the sixth or seventh, which 

 measures J length of head ; soft rays scarcely longer. Anal III 7--8 ; 

 third spine nearly as long as dorsals. Pectoral as long as or a little 

 longer than head. Ventral reaching origin of anal. Caudal with deep 

 crescentic notch. Caudal peduncle nearly twice as long as deep. 

 Scales 30-32 ^ ; lateral line 5-14. Silvery, brownish above ; a large, 

 round, black spot on posterior third of spinous part of dorsal, rarely 

 followed by a second. 



Total length 120 millim. 



Lake Tanganyika. 



1-9. Types. Usainbura Market. Prof. J. E. S. Moore (C). 



10. Skel. 



26. GEPHYROCHROMIS. 



Bouleng. Ann. & Mag. N. H. (7) vii. 1901, p. 4, and Poiss. Bass. Congo, p. 418 

 (1901) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 298. 



Body moderately elongate ; scales feebly ctenoid ; two incomplete 

 lateral lines. Jaws with a band of very small tricuspid teeth, with 

 an outer series of larger, closely set, conical, strongly incurved teeth. 

 Maxillary exposed at the end. Dorsal with 17 spines, anal with 3. 



Lake Tanganyika. 



1. GEPHYROCHROMIS MOORII. 



Bouleng. 11. oc. and Tr. Zool. Soc. xvi. 1901, p. 156, pi. xx. fig. 1 ; Pellegr. t. c. 

 p. 299. 



Depth of body equal to length of head, 3 times in total length. 

 Head twice as long as deep, with curved upper profile ; snout rounded, 

 broader than long, as long as eye, which is 3| times in length of head 

 and equals interorbital width ; mouth extending to between nostril and 

 eye; teeth in 5 series, 56 in outer series of upper jaw; 3 series of 

 scales on the check. Gill-rakers short, 13 on lower part of anterior 

 arch. Dorsal XVII 8 ; spines increasing in length to the last, which 

 measures J length of head and f longest soft rays. Anal III 7 ; third 

 spine a little shorter than last dorsal. Pectoral nearly as long as head, 

 not extending to vertical of origin of anal. Ventral produced into a 



