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. Frofti 3 to 5 inches long. 



Mormyrus zanclirostris, sp. n. PL II. fig. B. 

 D. 19. A. 39. L. 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 leixgth (w^ithout 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, g. 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 

 Marcusenias 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* 



