324 CICHLID^. 



54 in upper jaw ; 3 or 4 series of scales on the cheek, width of scaly 

 part less than diameter of eye. Gill-rakers rather long and slender, 

 11 on lower part of anterior arch. Dorsal XVI 8-10; spines equal 

 from the sixth, f to nearly ^ length of head; longest soft rays i length 

 of head. Anal III 7-8 ; third spine as long as longest dorsals. Pectoral 

 I to f length of head, extending to vertical of origin of anal. Ventral 

 reaching vent or anal. Caudal truncate or feebly emarginate. Caudal 

 peduncle 1| to 1^ times as long as deep. Scales feebly denticulate. 



Fig. 21 B. 





S^^^'j'^^o^^f*^^' ■Ml/3|^'f^l|% 



Paratilapia pfefferi. 

 Type (Tr. Z. S. 1898). f 



32-33 gTjo ; lateral lines xg^Ii- Olive above, silvery white beneath, with 

 seven dark cross-bands ; vertical fins greyish brown, spinous dorsal 

 darker towards the edge. 



Total length 76 millim. 



Lake Tanganyika. 



1. Type. Kinyamkolo. Prof. J. E, S. Moore (C). 



2-3. Ad. Sumbu. Dr. W. A. Cumiington (C). 



9. PARATILAPIA DEMEUSII. 



Boulcng. Ann. Miis. Congo, Zool. i. p. 120, pi. xlv. fig. 3 (1899), and Poiss. Bass. 

 Congo, p. 416 (1901) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 262. 



Depth of body slightly greater than length of head, which is 3 times 

 in total length. Head twice as long as broad, frontal region humped ; 

 snout rounded, with straight upper profile, as long as broad, as long as 

 postocular part of head; eye 3| times in length of head, equal to 

 interorbital width, exceeding prteorbital depth; mouth extending to 

 below anterior fourth of eye ; teeth small, in 3 series, about 60 in outer 

 series of upper jaw ; 4 series of scales on the cheek, width of scaly part 

 equal to diameter of eye Gill-rakers short, 9 on lower part of anterior 



