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Show 724 DR. A. GUNTnER O N FISHES [June 6, contained 2| times in that of the head ; upper jaw projecting beyond the lower; mouth rather wide, a little wider than tbe 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 eye distant from each other. The teeth on the Chrysichthys ogowensis. palate form a rather broad crescent, interrupted in the middle in front, the toothless space being one third 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 interorbital space is three fourths of that of the orbit, which is contained 1| in tbe 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. Upper parts olive-coloured, sides and abdomen silvery. Kondo-Kondo, on the Ogowe River (one specimen 194 millim. long). The principal character by which this species differs from Ch. buttikoferi (s. str.) is the greater development of the teeth on the palate. CHRYSICHTHYS CORISCANUS, sp. n. Chrysichthys biittikoferi, 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 3^ times ; caudal peduncle two thirds as high as long. Head scarcely broader than high, its 1 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. |
