from the Gaboon and Gold Coast. 115 
out caudal), the length of the head one-fourth; snout a little 
_ longer than broad, with the nose slightly protruding. Teeth in 
a double series, the lower jaw with sixteen teeth in the front 
series. Body silvery, caudal and lower fins red ; a large, oblique, 
band-like black blotch on the dorsal; a small black spot on the 
root of the caudal. 
Gaboon. From 3 to 5 inches long. 
Mormyrus zanclirostris, sp.n. Pi. II. fig. B. 
D,19,. A. 39. LL. lat. 70. 
Snout much prolonged, tubiform, straight. Lower jaw with- 
out appendage; eye rather nearer to the end of the snout than 
to that of the opercle, very small. Teeth .small, compressed, 
incisor-like, =. Pectorals much longer than ventrals, but ter- 
minating at a great distance from the base of the ventrals. 
Caudal very small. Origin of the dorsal fin opposite to the 
thirteenth anal ray. The height of the body is one-seventh of 
the total length (without caudal), the length of the head rather 
more than one-fourth. Brown; an ill-defined band along the 
lateral line, and the tail of a darker colour. 
Gaboon. 10 inches long. 
The figure is two-thirds the natural size. 
Mormyrus microcephalus, sp. n. 
D. 15-16. A.28-31.  L. lat. 62. 
Snout obtuse, very short, twice as long as the eye, the dia- 
meter of which is about one-seventh or one-eighth of the length 
of the head. Mouth subanterior. Teeth brown, emarginate, 
small, 2. The height of the body is two-elevenths of the total 
length (without caudal), the length of the head one-sixth. Pec- 
toral nearly as long as the head, extending beyond the root 
of the ventral. Caudal fin small. Brown; head and fins 
black. 
Gaboon (River Ogome). 7 inches long. Evidently allied to 
Marcusenius brachyistius (Gill). 
Mormyrus Henryi. 
Isichthys Henryi (Gill). 
This is not a Mormyrops as I formerly supposed; it has an 
elongate band of teeth on the palate and tongue. Our specimen 
has D.48. A.46, and is from West Africa, probably Old 
Calabar. 
8* 
