260 



CHAEACINIDJi:. 



1. DISTICHODUS AFFINIS. 

 Gunth. Ann. & Mag. N. H. (4) xii. 1873, p. 144 ; Bouleng. Poiss. Bass. Congo, 



p. 187 (1901). 

 Distichodus ahlreviatus, Peters, Men. Berl. Ac. 1876, p. 845. 



Depth of body 2 to 2§ times in total length, length of head 3J to 4 

 times. Head as long as deep or a little deeper than long, !1| to 2 times 

 as long as broad; snout not compressed, as long as eye, which is 3 times 

 in length of head ; interorbital width 2 to 2J times in length of head ; 

 maxillary extending to below nostrils ; teeth in two series in each jaw, 

 outer series containing 20 teeth. Dorsal 16 (4 unbranched), equally 



Fig. 197. 



Distichodus affinis. 

 Lower Congo, j^. 



distant from head and from caudal, its base equalling its distance from 

 the small adipose fin. Anal 19-21 (3 unbranched), its base longer 

 than that of dorsal. Pectoral | length of head. Caudal forked, with 

 short rounded lobes. Caudal peduncle deeper than long. Scales 

 37-39 ^, 7 between lateral line and root of ventral. Silvery, back 

 olive-brown ; anterior border of dorsal blackish. 



Total length 120 millim. 



Congo. 



1. Yg., type. Boma, Lower ('ongo. J. J. Bianconi, Esq. (C). 



2. Hgr. „ „ Capt. Wilverth (C). 



3. Yg. „ ,, M.. P. Delhez (C). 



4. Ad. Lower (Jongo. M. F. Hens (C). 



