MOEMYEUS. 131 



jaw, 6 or 8 in lower ; eye large, in anterior half of the head, nearly as 

 long as the snout, 1^ to 1^ times interorbital width. Dorsal 64-65, 

 originating above base of ventral, twice as far from base of caudal as 

 from end of snout, 4-4J times as long as anal. Anal 19-21, originating 

 a little nearer base of caudal than end of snout. Pectoral pointed, as 

 long as head, ventral f length of head. Caudal with long pointed 

 lobes, as long as head. Caudal peduncle 2| times as long as deep, 

 f length of head. 85-98 scales in lateral line, ^^^ in transverse 

 series on body, 23-28 in transverse series between dorsal and anal, 12 

 round caudal peduncle. Brownish above, silvery white beneath. 



Total length 290 millim. 



Niger. 



4. MORMYRUS OVIS. 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 1.5, pi. vii. fig. 2 (1898), Proc. Zool. Soc. 

 1898, p. 815, and Poiss. Bass. Congo, p. 110 (1961). 



Depth of body 3J to 4 times in total length, length of head 4f to 5 

 times. Head nearly as long as deep, with strongly curved upper profile ; 

 snout short, ^ to f postorbital part of head ; teeth very small, notched, 

 5 in upper jaw, 8 in lower ; eye moderate, J length of snout, ^ to f 



rig. 109. 





\ 



\ 

 •J 



Mormyrus ovis. 

 Type (A. M. C). f • 



interorbital width. Dorsal 53-55, originating above base of ventral, 

 a little longer than its distance from end of snout, 2f to 3 times as 

 long as anal. Anal 22-23, originating a little nearer head than base of 

 caudal. Pectoral obtusely pointed, | length of head, ventral | or | 



K 2 



