436 



CIC11L1D.E. 



convex upper profile, twice as long as broad, longer than postocular part 

 of head ; eye 3^ to 4 times in length of snout, 7 to 8 times in length of 

 head, twice in interorbital width ; mouth widely separated from vertical 

 of anterior border of eye ; teeth in 2 or 3 series ; 5 or 6 series of scales 

 on the cheek. Gill-rakers rather short, 15 or 16 on lower part of 

 anterior arch. Dorsal XVIII-XX 12-13 ; spines weak, increasing in 

 length to the last, which measures | length of head ; longest soft rays 



Fiof. 297. 



Cham^sochrom is esox. 



Type. 



about J- length of head. Anal III 10-11 ; third spine nearly as long as 

 and stronger than last dorsal. Pectoral } length of head. Ventral not 

 reaching vent. Caudal ^scaly, feebly but distinctly emarginate. Caudal 

 peduncle 2 to 2| times as long as deep. Scales finely denticulate, 

 43-45 j.x:]^ ; lateral lines ijr^. Bright silvery white, except on the 

 back, which is dark green ; a black opercular spot ; fins bluish grey, 

 dorsal and anal edged with orange. 



Total length 370 millim. 



Lake Nyassa. 



1-2. Typt'?;. L. Nviissa. 



■\. ykcl. 



Capt. E. I.. Khoadcs (P.). 



17. BATHYBATES. 



Boulong. Tr. Zool. Soc. xv. IS'.^S, p. 15, and Poiss. Bass. Congo, p. 429 (1901) ; 

 Pellogr. Mem. Soc. Zool. France, xvi. 1904, p. 3G4 ; Boiileng. Tr. Zool. Soc. 

 xvii. 1900, p. 5()0. 



Body elongate ; scales cycloid, small, and irregular. Teeth in jaws 

 fang-like, in 2 to 4 series, the inner depressible, hinged at tlie base ; 

 maxillary bone folding under the pncorbital. Dorsal with 13 to 17 



