168 African Cichlid Fishes of the Genus Tylochromis. 
of anterior arch. Lower pharyngeal 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 4 or a little more or Jess than 4 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 with or without dark spots. 
Lake Bangwelu and Luapula River. 
Five specimens, 170 to 240 mm. in total length. 
5. Tylochromis intermedius. 
eae ee intermedius, Bouleng. Cat. Afr. Fish. iv. p. 332, fig. 193 
( ° 
Pharyngeal dentition nearly as in 1’. bangwelensis, from 
which it is distinguished by the fewer gill-rakers (12 or 13) 
and the more numerous scales (39-40). Dorsal XIV 15-17. 
Anal III 7-9. 
Total length 110 mm. 
Sierra Leone. 
6. Tylochromis labrodon, sp. n. 
Pelmatochromis lateralis (part.), Bouleng. Cat. Afr. Fish. iii. p. 385 
(1916). 
Depth of body 24 in the length, length of head 2% to 3. 
Snout as long as or a little longer than postorbital part of 
head ; diameter of eye 3 to 32 in length of head, greater 
(young) or less than preeorbital depth; interorbital width 
3 to 34 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 4 length of head. Anal III 7; third spine 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 
longitudinal series, 6 or 7 from first dorsal spine to lateral 
line, 24 to 27 in upper lateral line, 26 to 28 in lower, 2 
between lateral lines. 
