CHARACDJIDJE. 



177 



long as deep ; snout as long as or shorter than eye, which is lateral and 

 21 (y° un g) to %i times in length of head ; adipose eyelid well developed ; 

 interorbital region convex, its width 2§ to 3 times in length of head ; 

 maxillary not extending to below anterior border of eye ; 14 (|) teeth 

 in upper jaw, 10 (I) in lower ; lower border of second suborbital as 

 long as eye. Gill-rakers long and slender, 15 to 18 on lower part of 

 anterior arch. Dorsal II 8, originating above ventral, at equal distance 

 from end of snout and from caudal, longest ray f to once length of 

 head. Anal III 17-18. Pectoral f to once length of head, not 



Fie. 114. 



Alestes ansorr/ii. 

 Type, f 



reaching ventral. Caudal forked, with long pointed lobes. Caudal 

 peduncle 1^ to 1| times as long as deep. Scales 37-40 ^gr- 3 , lj between 

 lateral line and ventral. Steel-blue on the back, silvery white on the 

 sides and below ; fins greyish, ventral, anal, and caudal yellow or 

 orange at the base; pectoral and ventral often with a large black or 

 blackish blotch. 



Total length 270 millim. 



Angola. 



1-6. Types. 

 7-8. Types. 

 9-11. Types. 



Distinguished from A. macrophthalmus by larger scales (37-40 - J ^- 

 H, instead of 39-45 ^fp, 2). 



VOL. IV. N 



Quanza R. at Cunga. 

 ,, Dondo. 



Lucalla R. at Lucalla. 



Dr. W. J. Ansorge (C). 



