330 SILURID.E. 



10. CHRYSICHTHYS LONGIBARBTS. 



Clirysohagrus lomjibarhisj Bouleng. Ann. Mus. Congo, Zool. i. p. 4), pi. xxi. fig. 2 



(1899). 

 Clirysichthys longiharhis, Bouleng. Poiss. Bass. Congo, p. 291 (1901). 



Depth of body 4| to 5 times in total length, length of head 3^ to 3f 

 times. Head much depressed, 1^ times as long as broad, feebly rugose 

 above; occipital process in contact with intevneural shield; snout 

 rounded, its length about ^ of head ; eye 3 (young) to o times in length 

 of head, 1 to Ih times in interorbital width ; mouth inferior, its width 

 2 to 2| times in length of head ; preemaxillary band of teeth feebly 

 curved, 4 to 5^ times as long as broad; two short bands of vomerine 

 teeth, separated by a narrow interspace ; nasal barbel 3 to f diameter of 

 eye; maxillary barbel 3 to 3| times as long as head ; outer mandibular 

 barbel a little longer than head, nearly twice as long as inner. Gill- 

 rakers moderate, 20-23 on lower part of anterior arch. Dorsal 1 6, 

 ly to ]|- times as distant from root of caudal as from end of snout; 



Pijr. 258. 



Chri/sichthi/s lo7}r/ibarhis. 

 Type (A. M. C). i- 



spine shorten- than head, feebly serrated behind ; first soft ray longest, as 

 long as or a little longer than hend. Adipose fin as long as deep or a 

 little longer than deep, its base less than that of the rayed dorsal and 

 measuring about half its distance from the latter. Anal 12-13, S or 9 

 rays branched. l\^ctoial spine f to f length of head, strongly serrated 

 on inner side. Caudal deeply forked ; lobes long and pointed, outer 



