724 DR. A. GtJNTHBR ON FISHES [June 6, 



contained 2^ times in that of the head ; upper jaw projecting 

 beyond the lower ; mouth rather wide, a little wider than the 

 distance between the eyes. Nasal barbels half as long as the eye ; 

 maxillary and outer mandibulary barbels not reaching the gill- 

 opening, if stretched backward ; mandibulary barbels inserted in a 

 nearly straight line, the inner being slightly anterior and half a 

 diameter of the eve distant from each other. The teeth on the 



rig. 5. 



Ghrysichthi/R ogowensis. 



palate form a rather broad crescent, interrupted in the middle in 

 front, the toothless space being one thii'd as wide as the eye ; the 

 teeth may or may not be confined to the vomer \ The band of 

 intermaxillary teeth tapers outward, each half being twice as broad 

 as long. The width of the iuterorbital space is three fourths of 

 that of the orbit, which is contained If in the length of the snout 

 and 4| times in that of the head. Dorsal fin of moderate height, 

 not extending to the adipose, if laid backward ; (dorsal and 

 pectoral spines broken). The length of the base of the dorsal fin 

 is a little less than one half of its distance from the adipose, and 

 about twice as long as the base of the latter. Anal fin not reaching 

 the caudal when laid backward, with 14 rays, 9 of which are 

 branched. Caudal fin deeply cleft, with the upper lobe rather 

 longer than the head. Tipper parts olive-coloured, sides and 

 abdomen silvery. 



Kondo-Kondo, on the Ogowe Eiver (one specimen 194 millim. 

 long). 



The principal character by which this species differs from 

 Ch. buttihoferi {s. str.) is the greater development of the teeth on 

 the palate. 



Chrysichthys coriscanus, sp. n. 



Chryskhthys buttUcoferi, part., Giinth. Ann. & Mag. N. H. 1896, 

 April, p. 276. 



The height of the body is contained 4| times in the total length 

 (without caudal), the length of the head 8§ times ; caudal peduncle 

 two thirds as high as long. Head scarcely broader than high, its 



' They are confined to the vomer on the right side, but on the left they are 

 continued on the palatine as a short patch, slightly separated from the vomerine 

 band. • 



