332 SILUKIDJE. 



pterygoid teeth forming two rather broad bands separated by a more or 

 less wide space in the middle ; nasal barbel 1 to 2 diameters of eye ; 

 maxillary barbel f length of head or nearly as long as head ; outer 

 mandibular barbel 1J times length of inner, J or a little more than j$ 

 length of head. Gill-rakers moderate, 12-15 on lower part of anterior 

 arch. Dorsal I 6, equally distant from end of snout and from root of 

 caudal ; spine ^ to § length of head, feebly serrated in front and behind ; 

 second and third soft rays longest, § to once length of head. Adipose 

 fin 2 to 3 times as long as deep, its base as long as or a little longer than 



Fig. 259. 



Chrysichtliys wagenaari. 

 Type (A. M. C). 1 



that of the dorsal and equal to or a little less than its distance from the 

 latter. Anal 11-12, 7-9 rays branched. Pectoral spine nearly as long 

 as dorsal, feebly serrated on inner border in the adult, strongly in the 

 young. Caudal moderately or rather feebly notched in the adult, with 

 rounded lobes, the longest rays twice as long as the median in the young. 

 Caudal peduncle 1| times as long as broad. Dark brown, lighter beneath. 



Total length 700 millim. 



Congo. — Type in Congo Museum, Tervueren. 

 1-2. Hgr. Upper Congo. Brussels University. 



3. Ad. Congo. 



13. CHRYSICHTHYS CRANCH1T. 

 Pimelodus cranchii, Leach, in Tuckey, Exped. 11. Zaire, p. 40!) (1818) ; Griffith & 



Smith, Anini. Kingd. pi. xl. (1834). 

 Chrysichthjs cranchii, Gitnth. Cat. Fish. v. p. 72 (18G4) ; Scliilthnis, Tijdsclir. 

 Nederl. Dierk. Ver. (2) iii. 1891, p. 84 ; Bouleng. Tr. Zool. Soc. xv. 1899, 

 p. 95, and Poiss. Bass. Congo, p. 282 (1901). 

 Depth of body 4 to 5 times in total length, length of head 3 to 3-]- 



