300 ADUENDA, YOL. 11. 



than head, spine stvongl)' serraterl on inner side. Caudal deeply forked, 

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

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

 beneath ; fins olive-brown. 



Total length IBOmillim. 



Angola. 

 1-2. Types. Quanza R. at Dondo. Dr. W. J. Ansorge (0.). 



Closely allied to C.furcatiis; distinguished by longer barbels. 



4&. CnRYSICHTHYS ANSORGII. 

 Bouleng. Ann. & Mag. N. H. (8) vi. 1910, p. o58. 



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

 times. Head rather strongly depressed, I-5- to If times as long as broad, 

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

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

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

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

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

 curved, 4 times as long as broad ; voraero-pterygoid teeth formino- a 

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

 as long as eye, maxillary f to f length of head (as long as head in 

 Aery young), outer mandibular -^ to §, inner mandibular ^ to \. Gill- 

 rakers rather long, 13 to 15 on lower part of anterior arch. Dorsal I 6, 

 1^ to ]^ 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 lono- as 

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

 from latter. Anal 18, 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 f 

 length of longest. Caudal peduncle 1^ times as long as deep. Olive- 

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



Total length 300 millim. 



Angola. 



1-10. Types. Qnanza R. at Dondo. Dr. W. J. Ansorge (C). 



11. Type. Bengo E. at Cabiri. 



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

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

 less deeply forked caudal fin. 



