436 



CICHLIDJL 



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 



Fig. 297. 



A vV.y-) . y. A) yO vv^ i 



•Champsochromis esox. 

 Type. \. 



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

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

 leaching vent. Caudal ]scaly, feebly but distinctly emarginate. Caudal 

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

 43-45 j^-j3 ; lateral lines j-g^g. Bright silvery white, except on the 

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

 dorsal and anal edsjed with orange. 



Total length 370 millim. 



Lake Nyassa. 



1-2. Types. L. Nyassa. Capt. E. L. Rhoades (P.). 



3. Skel. 



17. BATHTBATES. 



Bouleng. Tr. Zool. Soc. xv. 1898, p. 15, and Poiss. Bass. Congo, p. 429 (1901) ; 

 Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 364 ; Bouleng. Tr. Zool. Soc. 

 xvii. 1906, p. 565. 



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

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

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



