i&2 CHAEACIXID^. 



Upper Congo (Lake Leopold II. and Alima River), Shari River. — 

 Tj'pe in Congo Museum, Tervueren. 

 1. One of the types. Ibali, Lake Leopold 11. M. P. Delhez (C). 



3. DISTICHODUS NOBOLI. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 81, pi. xxxv. fig. 2 (1899), and Poiss. Bass. 

 Congo, p. 189 (1901). 



Depth of body 2| times in total length, length of head 3| times. 

 Head a little longer than deep ; snout broad and rounded, a little 

 shorter than eye, which is 3 times in length of head ; interorbital width 

 2 J times in length of head; maxillary extending to below nostrils; 

 teeth in two series in each jaw, outer series containing 16-18 teeth. 

 Dorsal 20 (4 unbranched), a little nearer head than caudal, its base 

 1^ times its distance from adipose fin, which is small. Anal 16 (3 un- 



Distichodus noboli. 

 Type (A. M. C). 



branched). Pectoral ^ length of head. Caudal forked, with rounded 

 lobes. Caudal peduncle a little deeper than long. Scales 45 j^, 8 

 between lateral line and root of ventral. Olive above, silvery beneath ; 

 dorsal red, with a large black blotch covering its anterior third; ventral, 

 anal, and caudal red ; a round black spot at root of caudal. 



Total length 60 millim. 



Upper Congo (Lake Leopold II.). — Type in Congo Museum, 

 Tervueren. 



4. DISTICHODUS NOTOSPILUS. 

 Gunth. Ann. & Mag. N. H. (3) xx. 1867, p. 114 ; Bouleng. Poiss. Bass. Congo, 

 p. 186 (1901). 

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

 times. Head as long as deep. If to 2 times as long as broad ; snout 



