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 millim. 
A single specimen. 
Mormyrus Bentleyt. 
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 1 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 
4 length of head. Pectoral nearly as long as head, extending 
beyond base of ventral; latter not quite $ length of head. 
Anal 34; longest rays 2 length of head. Depth of caudal 
peduncle 4 its length. Scales 58 5; 12 scales round caudal 
peduncle. Dark olive. 
Total length 270 millim. 
A single specimen. 
Mormyrus Stanleyanus. 
Depth of body 32 times in total length, length of head 5 
times. Snout short, moderately curved, 14 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 2 length of head. Anal 37; longest rays a little more 
than 4 length of head. Depth of caudal peduncle 4 its length. 
Scales 80 2; 12 scales round caudal peduncle. Silvery, 
dark grey on the back. 
Total length 210 millim. 
A single specimen. 
Allied to IM. cyprinoides, L., which differs in the more ~ 
convex snout, the smaller eye, and in the number (16) of 
scales round the caudal peduncle. 
te” Be 
alte. 
