1899.] mOM THE GOLD COAST. 725 



greatest width being two thirds of its length. The greater portion 

 of the upper surface of the head is granulated, or covered only with 

 a thin film of skin ; the snout, as usual, is covered with soft skin. 

 Occipital process longer than the basal bone of the dorsal spine, 

 both meeting behind the middle of the nape. Snout of moderate 

 length, narrowed towards the end, with the upper profile descending 

 in a curved line ; its length is one third of that of the head. 

 Upper jaw slightly overlapping the lower ; mouth of moderate 

 width, as wide as the distance between the eyes. Nasal barbels 

 minute, about one-third the width of the eye ; maxillary barbels 

 reaching the gill-opening, outer mandibulary barbels not reaching 

 the gill-opening, if stretched backward ; mandibulary barbels 

 inserted in a straight line, the inner being one third of the 

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

 palate are confined to the vomer, being placed in two small groups 

 which are distant from each other about one fourth of the diameter 

 of the eye \ The band of intermaxillary teeth is scarcely tapering 

 outward, each half being two thirds as long as broad. The width 

 of the bony interorbital space is three fifths of the diameter 

 of the eye, which is four fifths of the length of the suout, and 

 contained 3^ times in that of the head. Dorsal fin rather high, 

 but not reaching the adipose fin, if laid backward ; the length 

 of its base is one half, or a little less than one half, of its distance 

 from the adipose fin, and nearly twice as long as the base of the 

 latter. Dorsal spine as long as the head without snout, with in- 

 distinct posterior serrature in its upper half. Anal fin not reaching 

 the caudal, if laid backward, with 12 rays, 7 of w'hich are branched. 

 Caudal fin deeply cleft, with the upper lobe rather longer than the 

 head. Pectoral spine as long as that of the dorsal tin, smooth 

 along the outer edge. Upper parts greyish olive, sides and 

 abdomen silvery. 



Corisco Isld. (two specimens, 148 and 163 millim. long). 



The principal character by which this species diifers from 

 Ch. bilttikoferi (s. str.) is the smaller number of anal rays. 



Chrysichthys lagoensis, sp. n. 



Glirysiclithys macrops, part., Giinth. Ann. & Mag. N. H. 1867, 

 Aug. p. 111. 



The height of the body is two ninths of the total length (without 

 caudal), the length of the head rather less than one third. Caudal 

 peduncle two thirds as high as long. Head a little broader than 

 high, its greatest depth being two thirds of its length ; the greater 

 portion of its upper surface is granulated. Occipital process 

 rather broad, as long as the basal bone of the dorsal spine, both 

 meeting in the middle of the nape. Snout long, two fifths of the 



^ The two specimens are not quite alike in this reapect ; on the right-hand 

 side of the larger specimen, the patch of teeth is continued backward in a 

 single series of about six minute teeth. In the smaller specimens the two 

 vomerine patches are rather more approximated than in the larger. 



Proc. Zool. Soo.— 1899, No. XLYII. 47 



