SnO ADDENDA, Vol.. Tl. 



than head, spine strongly serrated on inner side. Candal deeply forked, 

 ■with long pointed lobes, middle rays ^ length of longest. Caudal 

 peduncle 1^ to l^ times as long as deep. Olive-brown above, white 

 beneath ; fins olive-brown. 



Total length IGO millini. 



Angola. 

 1 2. Tvpes. Quanza K. at Doiulo. Dr. W. J. Ansorge (C). 



Closely allied to ('. furcatus; distinguished by longer barbels. 



\h. ClIRYSICHTHYS ANSORGII. 

 Boideng. Ann. & Mag. N. II. (8) vi. 1910, p. f.58. 



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

 times. Head rather strongly depressed, 1'5 to If times as hmg as broad, 

 its upper surface smooth, covered with thick skin ; occipital process 

 narrow, extending to the small interneural shield; snout rounded ; eye 

 3-^ (young) to 5 times in length of head, 1 (young) to 2 times in inter- 

 ocular width ; mouth inferior, its width 1-g- to 1^ times in length of head 

 (narrower in youngj; praemaxillary band of teeth straiglit or feebly 

 curved, 4 times as long as broad ; vomero-pterygoid teeth forming a 

 strong and long band, narrowly interrupted in the middle ; nasal barbel 

 as long as eye, maxillary | to f length of head (as long as head iu 

 very young), outer mandibular \ to f, inner mandibular ^ to \. Gill- 

 rakers rather long, 13 to 15 on lower part of anterior arch Dorsal I fi, 

 1^ to It,- times as distant from end of snout as from root of caudal ; 

 spine strong, feebly serrated behind, f to f length of head ; second or 

 third soft ray longest, |- to f length of head ; adipose fin as long as 

 or a little shorter than base of rayed dorsal, \ to \ as long as its distance 

 from latter. Anal 13, 8 or 9 rays branched. Pectoral much shorter 

 than head, spine strongly serrated on inner side. Caudal moderately 

 forked, the lobes obtusely pointed in the adult, middle rays f to i 

 length of longest. Caudal peduncle H times as long as deep. Olive- 

 brown or grey to blackish above, white beneath ; fins olive-brown. 



Total length 300 millini. 



Angola. 

 1-10. Types. Quanza R. at Dondo. Dr. W . .1. An.«orge (C). 



11. 'J'vpe. Bengo R. at Cabiri. ,, 



In the adult and half-grown state easily distinguished from the 

 preceding bv the broader flatter head, shorter maxillary barbels, and 

 less deeply forked caudal fin. 



