210 



CHAEACINIDJ:. 



which is lateral and 3 to 3| times in length of head ; adipose eyelid feebly 

 developed ; interorbital region feebly convex, its width 2i to 2f times 

 in length of head ; maxillary not extending to below anterior border of 

 eye; 16 teeth (|-) in upper jaw, 10 (|-) in lower; lower border of 

 second suborbital as long as or longer than eye. Gill-rakers moderately 

 long, 16-20 on lower part of anterior arch. Dorsal II 8, originating 

 above middle or last ray of ventral, at equal distance from end of snout 

 and from caudal, or a little nearer latter ; longest ray as long as or a 

 little shorter than head. Anal II-III 14-16. Pectoral f to f length 

 of head, not reaching ventral. Caudal forked, with pointed lobes. 

 Caudal peduncle 1 to If times as long as deep. Scales with radiating 

 and arborescent or anastomosing canals, 23-29 p, l-j- 2 between lateral 

 line and root of caudal. Silvery, back olive or bluish ; a dark spot 

 often present behind the head, above the lateral line ; a large blacli 

 blotch on the caudal peduncle. 



Total length 195 millim. 



From the Congo and Hovuma to the Quauza and Limpopo. — Types 

 in Berlin Museum. 



Fig. 157. 



Alestes imheri. 

 Type of A. fuchsii (A. M. C). f . 



1. Hgr. 



2. Hgr. 



3. Typo o£ A fuchsii 



Bange Ngola, Angola. 

 Stanley Pool. 



Kutu, L. Leopold II., 

 Upper Congo. 



Dr. W. J. Ansorge (C). 

 M. A. Greshoff (C.) ; 



Utrecht University (E.). 

 M. P. Delhez (C). 



