426 On new Fishes from the Upper Congo. 



the adipose fin, the seventh on the caudal peduncle ; dorsal 

 and adipose fins blackish. 



Total length 115 raillira. 



A single specimen. 



Mormyriis Bentleyi. 



Depth of body equal to length of head, 5 times in total 

 length. Snout short, moderately curved, twice diameter of 

 eye, ^ length of head ; mouth terminal, on a line with lower 

 border of eye, its width \ length of head ; teeth moderately 

 large, notched, 7 in the upper jaw, 10 in the lower; chin 

 strongly swollen; diameter of eye 8 times in length of head. 

 Dorsal 23, originating halfway between the gill-opening and 

 the caudal and above the sixth ray of the anal ; longest rays 

 ■| length of head. Pectoral nearly as long as head, extending 

 beyond base of ventral; latter not quite ^ length of head. 

 Anal 34 ; longest rays |- length of head. Depth of caudal 

 peduncle ^ its length. Scales 58 jg ; 12 scales round caudal 

 peduncle. Dark olive. 



Total length 270 millim. 



A single specimen. 



Mormyrus Stanley anus. 



Depth of body 3f times in total length, length of head 5 

 times. Snout short, moderately curved, 1^ diameter of eye, 

 ^ length of head, § interorbital width ; mouth terminal, on a 

 line with centre of eye, its width ^ length of head ; teeth 

 moderately large, not notched, 7 in the upper jaw, 6 in the 

 lower; chin strongly swollen; diameter of eye 5 times in 

 length of head. Dorsal 28, originating halfway between the 

 gill-opening and the caudal and above the ninth ray of the 

 anal ; longest rays a little more than ^ length of head. 

 Pectoral a little shorter than head, reaching base of ventral ; 

 latter § length of head. Anal 37 ; longest rays a little more 

 than \ length of head. Depth of caudal peduncle ^ its length. 

 Scales 80 j| ; 12 scales round caudal peduncle. Silvery, 

 dark grey on the back. 



Total length 210 millim. 



A single specimen. 



Allied to M. cyprinoides, L., which differs in the more 

 convex snout, the smaller eye, and in the number (16) of 

 scales round the caudal peduncle. 



