CHEYSICHTHYS. 



9. CHRYSICHTHYS BREVIBARBIS. 



Chrysohagrm brevibarbis, Bouleng. Ann. Mus. Congo, Zool. i. p. 40, pi. xxi. fig. 1 



(1899). 

 Chrysichthys brevibarbis, Bouleng. Poiss. Bass. Congo, p. 290 (1901). 



Depth of body 4-J to 5 times in total length, length of head of times. 

 Head much depressed, If to 1\ times as long as broad, feebly striated 

 and granulated on the occiput ; occipital process in contact with inter- 

 neural shield ; snout truncate, projecting slightly beyond lower jaw, its 

 length nearly £ of head ; eye 3 (young) to 5 times in length of head, \ to 

 | interorbital width ; width of mouth 3 times in length of head ; pra> 

 maxillary band of teeth feebly curved, 4 to 6 times as long as broad ; 

 two short bands of vomerine teeth, separated by a narrow interspace ; 



Fie. 257. 



4fek^ 



Chrysichthys brevibarbis. 

 Type (A. M. C). j. 



nasal barbel not J diameter of eye ; maxillary barbel slightly longer than 

 head ; outer mandibular barbel about once and -J as long as inner. Gill- 

 rakers moderate, 17 on lower part of anterior arch. Dorsal I 6, ly to 

 If times as distant from root of caudal as from end of snout; spine a 

 little shorter than head, smooth or feebly serrated behind ; first soft ray 

 longest, nearly as long as head. Adipose fin twice as long as deep, its 

 base equal to that of rayed dorsal, from which it is separated by a space 

 equal to 1| to 2 times its length. Anal 12, 9 rays branched. Pectoral 

 spine I- length of head, strongly serrated on inner side. Caudal deeply 

 forked ; lobes long and pointed, outer rays 3 times as long as median. 

 Caudal peduncle about twice as long as deep. Uniform brownish. 



Total length 440 millim. 



Congo. — Type in Congo Museum, Tervueren. 

 1. Hgr. Monsembe, Upp. Congo. Rev. J. H. Weeks (P.). 



