168 African Cicldid Fishes of the Genus Tylocliromis. 



of anterior arcl>. Lower phar3Migeal with slender hooked 

 teeth only at the outer edges and near the posterior angles ; 

 area of large rounded teeth extending forward on anterior half 

 of plate. Dorsal XIV 14-15 ; spines increasing in length to 

 last, which is ^ or a little more or less than ^ length of head. 

 Anal III 7-8 ; third spine from less than ^ to nearly ^ length 

 of head. Pectoral longer than head, extending to above 

 anterior part or middle of anal. Caudal truncate or slightly 

 emarginate. Caudal peduncle longer than deep. 37 or 38 

 scales in a longitudinal series, 6 or 7 from first dorsal spine to 

 lateral line, 24 to 29 in lower, 2 between lateral lines. 



Olivaceous ; often a dark spot on each scale ; sometimes* 

 six dark cross-bars ; vertical fins witii or without dark spots. 



Lake Bangwelu and Luapula River. 



Five specimens, 170 to 240 mm. in total length. 



5. Tylochromis intermedius. 



Pelmatochroniis intermedius, Bouleng. Cat. Afr. Fish. iv. p. 332, fig. 193 

 (1916). 



Pharyngeal dentition nearly as in T. hangxoehnsis, from 

 which it is distinguished by the fewer gill-rakers (12 or 13) 

 and tlie more numerous scales (39-40). Dorsal XIV 15-17. 

 Anal III 7-9. 



Total length 110 mm. 



Sierra Leone. 



6. Tylochromis lahrodon^ sp. n. 



Pehnatochromis lateralis (part.), Bouleng. Cat. Afr. Fisb. ill. p. 385 

 (1915). 



Depth of body 2^ in the length, lerigth of head 2^ to 3. 

 Snout as long as or a little longer than postorbital part of 

 head ; diameter of eye 3 to 3| in length of head, greater 

 (young) or less than prreorbital deptii ; interorbital width 

 3 to 3^ in length of head ; maxillary not extending to below 

 eye; teeth small ; three series of scales on cheek ; 18 or 19 

 gill-rakers on lower part of anterior arch ; lower pharyngeal 

 with slender teeth only at the outer edges and near the poste- 

 rior angles ; area of large rounded teeth extending forward 

 on anterior half of plate. Dorsal XV-XVI 13 ; spines sub- 

 equal from sixth or increasing to last, which is ^ or a little 

 less than h length of head. Anal III 7 ; third spino as long 

 as last dorsal. Pectoral about as long as head, not or barely 

 reaching origin of anal. Caudal slightly emarginate. 

 Caudal peduncle not longer than deep. 33 or 34 scales in a 

 longitudiiuil scries, 6 or 7 from first dorsal spine to lateral 

 linc3, 24 to 27 in uppor lateral line, 20 to 28 iu lower, 2 

 between lateral linci?. 



