806 MB. G. A. BOTTLENGEE ON THE FISHES [NoV. 15, 



caudal peduncle. Silvery, brownish above, uniform or vrith dark 

 blotches. 



Total length 270 millim. 



Nile, Congo. 



8. GrNATHONEMUS SEIfEGALENSIS. 



Mormyrus senegalensis, Steind. Sitzb. Ak. Wien, Ixi. i. 1870, 

 p. 551, pi. iv. fig. 1. 



Gnathonemus senegalensis, Bouleng. Ann. Mus. Congo, Zool. i. 

 1898, p. 11. 



Depth of body 3 to 3| times in total length, length of head 4| 

 to 4|. Head nearly as long as deep, with curved upper profile ; 

 snout less than \ length of head ; mouth small, on a line 

 with lower border of eye ; chin with a globular dermal ap- 

 pendage ; teeth small, conical, 5 in the upper jaw, 6 in the lower ; 

 eye moderate, | length of snout. Dorsal 26-28, originating above 

 6th ray of anal, its length twice in its distance from head. Anal 

 31-36, nearer base of caudal than base of ventral. Pectoral 

 pointed, a little shorter than head, twice as long as ventral, reach- 

 ing base of latter. Caudal scaled in its basal half, with pointed 

 lobes. Caudal peduncle 3 times as long as deep, | length of head. 

 66-72 scales in the lateral line, jg in a transverse line between 

 dorsal and anal, 12 round caudal peduncle. Steel-blue above, 

 silvery white below. 



Total length 200 millim. 



Senegal. 



9. Gnathonemus Stanley anus. 



Mormyrus stanleyanus, Bouleng. Ann. & Mag. N. H. (6) xx. 



1897, p. 4-26. 



Gnatlionemus staiileyanus, Bouleng. Ann. Mus. Congo, Zool. i. 



1898, pi. 11. 



Depth of body 3^ to 3| times in total length, length of head 

 4| to 5. Head little longer than deep, upper profile shghtly 

 convex ; snout ^ length of head ; mouth small, on a hue witli 

 centre of eye, its width i length of head; a globular dermal 

 swelling on the chin ; teeth small, conical or truncate, 7 in the upper 

 jaw, 6 in the lower ; eye moderate, | length of snout, f to | in- 

 terorbital width. Dorsal 28-31, originating above 9th-llth ray 

 of anal, its length twice in its distance from head. Anal 37-40, 

 nearer base of caudal than base of ventral. Pectoral pointed, 4 

 length of head, twice as long as veutral, extending beyond base of 

 latter. Caudal scaled, with obtusely pointed lobes. Caudal 

 peduncle 3 times as long as deep, | length of head. 70-80 scales 

 in the lateral line, ^^ in a transverse line on the body, ^;^^ in a 

 transverse line between dorsal and anal, 12 round caudal peduncle. 

 Silvery, dark grey on the back. 



Total length 220 miDim. 



Congo. — ^The type-specimen came from Stanley Falls. I have 

 examined other specimens from Matadi and Upoto. 



