Cichlid Fishes of the Genus Tylochromis. 167 
2. Tylochromis lateralis. 
Pelmatochromis lateralis, Bouleng. Proc. Zool. Soc. 1898, p. 148. 
Pelmatochromis lepidurus, Pellegr. Bull. Mus. Paris,-1900, p. 275. 
Pelmatochromis lateralis (part.), Bouleng. Cat. Afr, Fish. iii. p, 385, 
fig. 260 (1915). 
Depth of body 2 to 2} in the length, length of head 24 to 
34. Diameter of eye 3 to 4 in length of head ; interorbital 
width 33 to 32. ‘Teeth small; maxillary not extending to 
below-eye; cheek with 3 or 4 series of scales ; 17 or 18 gill- 
rakers on lower part of anterior arch. Lower pharyngeal 
with enlarged rounded teeth in a triangular area, the anterior 
angle of which is in the middle of the length of the denti- 
gerous part of the plate. Dorsal XIV-XV 12-15; last 
spine 4 or a little less than } length of head. Anal III 7-8 ; 
third spine from nearly 4 to 2 length of head. Pectoral 
longer than head, reaching origin of anal. Caudal slightly 
emarginate. Caudal peduncle about as long as deep. 32 to 
35 scales in a longitudinal series, 5 or 6 between first dorsal 
spine and lateral line, 2 between lateral lines. 
Olivaceous, with or without dark cross-bars; dorsal fin 
usually with series of dark spots. 
Congo. : 
Six specimens, including the type of the species, 110- 
220 mm. in total length, from Monsembe, Bolobo, Dolo, and 
Stanley Falls. 
3. Tylochromis jentinki. 
Pelmatochromis jentinki (Steind., 1894), Bouleng, Cat. Afr, Fish. iii. 
p. 383, fig. 259 (1915). 
Pharyngeal dentition as in 7’ lateralis, from which it is 
distinguished especially by the fewer gill-rakers (12-15), the 
smaller scales (40-45), and by having three series of scales 
instead of two between the upper lateral line and the anterior 
part of the lower. Dorsal XIII-XV 16-17. Anal III 8-9. 
Total length 290 mm. 
Gambia to Liberia. 
4, Tylochromis bangwelensis, sp. n. 
ee lateralis (part.), Bouleng. Cat. Afr. Fish. iii. p. 386 
Depth of body 2 to 2} in the length, length of head 3 to 34. 
Snout as long as postorbital part of head ; diameter of eye 4 
to 44 in length of head, less than preorbital depth ; inter- 
orbital width 3 to 33 in length of head; maxillary not 
extending to below eye ; outer teeth moderately strong; three 
series of scales on cheek; 14 or 15 gill-rakers on lower part 
