1899.] PEOM THE GOLD COAST. 729 



and short, about half as long as the eye. Maxillary barbels 

 reaching to, outer mandibulary barbels not reaching to, the gill- 

 opening when laid backward. Inner mandibulary barbels inserted 

 in a nearly straight line with the outer ones, their roots being 

 about half a diameter of the eye distant from each other. The 

 teeth on the palate occupy vomer and palatine bones and are 



Pig. 8. 



Chrysichthys kingsleyce. Upper and lower teeth. 



disposed in two elongated patches on each side. The band of 

 intermaxillary teeth is obliquely truncated at its lateral extremity, 

 and two thirds as long as broad ; the length of the mandibulary 

 hand of teeth ts one fourth of that of the head. The width of the 

 bony interorbital space is three fourths of the diameter of the eye, 

 which is one foiu-th of the length of the head. Dorsal fin not 

 elevated ; the length of its base is one half of its distance from 

 the adipose fin, the base of which is less than that of the dorsal. 

 Dorsal spine shorter than the head without snout, equal in length 

 to the pectoral spine, smooth in front, serrated behind. Anal fin 

 just reaching the caudal, when laid backward, with 12 rays, 8 of 

 which are branched. Caudal fin deeply cleft, with the upper lobe 

 equal in length to the head. Upper parts dark with bluish tinge, 

 sides and abdomen silvery. 



liiver Ogowe ; 225 millim. long. 



This species is very closely allied to Ch. 2Jersimilis, and I have 

 long hesitated before distinguishing it. In fact, it formed part of 

 Miss Kingsley's collection, which I described in 1896; but, un- 

 wilHng at that time to establish a species on apparently insufficient 

 ground, I put it aside for future consideration. The principal 

 difference fi"om Ch. pcrsimilis is that the cleft of the mouth does 

 not extend equally far backward, and that the mandibulary band 

 of teeth is very much shorter, iudicating a proportionally shorter 

 mandible. Unfortunately, we do not know from which of the 

 Gaboon rivers Gh. persimilis was obtained. 



Cheysichthts camaeonensis, sp. n. (Plate XLIV.) 



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

 length (\\ithout caudal), the length of the head S^ times. Caudal 

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

 greatest depth being contained 1| times in its length. The grauu- 



