302 



ADDENDA. VOL. II. 



smooth or feebly rugose above; occipital process narrow, in contact with 

 the small interneural shield ; snout obtusely pointed, nearly as long as 

 broad ; eye 3 (young) to 4 times in length of head, equal or nearly equal 

 to interorbital width ; width of mouth 2-| to 3 times in length of head ; 

 prsemaxillary band of teeth straight, nearly 3 times as long as broad ; 

 teeth on palate reduced to two small narrow bands ; nasal barbel -§■ to 

 % diameter of eye, maxillary barbel ^ length of head in adult, § to -f in 

 young. 14 to 16 gill-rakers on lower part of anterior arch. Dorsal I 6, 

 ]-g- to \\ times as distant from caudal as from end of snout; spine very 

 feebly serrated behind, \ to f length of head ; fust soft ray longest, at 



Fig. 180. 



Chrysichthys filamentosus. 

 Type (A. M. C). ±. 



least as long as head, usually much longer. Adipose dorsal small, its 

 base i to -j its distance from rayed dorsal. Anal 11-13, 7-8 rays 

 branched. Pectoral nearly § length of head ; spine strongly serrated 

 on inner border. Caudal deeply forked, lobes long and pointed, upper 

 longer, 3 to 2>\ times as long as median rays. Caudal peduncle 1J to 

 If times as long as deep. Olive-brown above, white beneath, silvery 

 on the sides ; fins greyish, end of dorsal blackish. 



Total length 21-5 millim. 

 Chi loan go. 



1. Type. 



2. Type. 

 3-4. Types. 

 5—6. Types. 

 7. Type. 



Luali R. at Buco Zau. 



,, at Lundo. 

 Loango R. at N'Kutu. 

 Lebuzi R. at Kuka Muno. 

 Chiloango Town. 



Dr. W. J. Ansorge (C.) . 



Very closely allied to C. walkeri. 



