338 



SILUEID.E. 



narrowly interrupted in the middle ; nasal barbel j to ^ length of head ; 

 maxillary barbel as long as or a little longer than head, sometimes ter- 

 minating in a small warty club-shaped expansion; outer mandibular 

 barbel f to f length of head, inner ^ to f . Gill-rakers moderate, 9 or 

 10 on lower part of anterior arch. Dorsal I 6, equally distant from root 

 of caudal and from end of snout or a little nearer the latter; spine not 

 serrated, f length of head; first soft ray longest, shorter than head. 

 Adipose dorsal 2 or 3 times as long as deep, nearly as long as rayed 

 dorsal, from which it is separated by a space equal to twice its base. 

 Anal 11-13, 6-8 rays branched. Pectoral spine as long as dorsal, 

 finely denticulate on outer border, strongly serrated on inner. Caudal 



Fig. 264. 



Chrysichihys ornatus. 

 Type (A. M. C). §• 



deeply forked, with pointed lobes, longest rays 2 to 2^ times length of 

 median. Caudal peduncle a little longer than deep. Brown above, 

 speckled with blackish and with broad blackish bands ; one of these 

 extends from the operculum to the base of the dorsal, forming a crescent 

 on the nape ; another on each side of the body sending off an upper 

 branch to the adipose fin ; a narrow interorbital cross-band ; fins spotted 

 with blackish ; a blackish band on each lobe of the caudal ; lower parts 

 white. 



Total length 190 millim. 



Upper Congo and Ubanghi. 

 1-3. Types. Monsembe, Upp. Congo. Rev. J. H. Weeks (P.). 



