1() Mr, G. A. LJouloimer on neio 



III. — Descriptio7is ofneio West- African Freshwater 

 Fishes. By G. A. Boulenger, F.R.S. 



Barhus Ansorgii. 



Dcptli of body ?>h to ?>l times in total lenp^th, length of 

 head 4 to 4)^ times. Snout rounded, slightly projecting 

 beyond the mouth, slightly shorter than the eye, the diameter 

 of which is 2>\ times in length of head ; interorbital width 3 

 times in length of head, width of mouth 3]^ times ; lips feebly 

 developed ; anterior barbel a little shorter, posterior a little 

 longer than eye, the distance between them about half diameter 

 of eye. Dorsal III 7, last simple ray very strong, bony, 

 strongly serrated behind, a little longer than head; free edge' 

 of the fin feebly concave ; its distance from the occiput a 

 little less than its distance from the caudal fin. Anal III 5, 

 longest ray about t length of head. Pectoral a little shorter 

 than head, nearly reaching ventral ; latter entirely in front 

 of vertical of origin of dorsal. Caudal peduncle 1| times as 

 long as deep. Scales 28-29 % 2|-3 between lateral line 

 and ventral, 12 or 13 round caudal peduncle. Brownish 

 above, silvery white beneath, with an ill-defined dark lateral 

 band above the lateral line ; fins uniform whitish. 



Total length 70 mm. 



Two specimens from the Luache Hiver at Bange Ngola, 

 Angola, collected by Dr. W. J. Ansorge. 



The position of the ventrals in advance of tlie dorsal 

 readily distinguishes this species from B. Kessleri, Stdr., 

 originally described from Angola. The nearest ally of 

 B. Ansorgii is B. jmludiiiosus, Ptrs., from East Africa, 

 which has shorter anterior barbels and more numerous scales. 



Barhus Walheri. 



Depth of body 3 to 3| times in total length, length of 

 head 3^ to 4 times. Snout rounded, slightly projecting 

 beyond the mouth, not longer tlian the eye; diameter of eye 

 4 times in length of head, interorbital width 2^^ to 2^ times; 

 width of mouth about I length of head ; lips moderately 

 developed, iiiteirupted on the chin ; barbels two on each 

 .'side, anterior 1^ to In, posterior 2 diameters of eye, the 

 distance between them nearly equalling diameter of eye. 

 Dorsal III S, last simple ray flexible, not enlarged, § to | 

 length of head ; free edge of the fin straight ; its distance 

 from the occiput a little less than its distance from the caudal 



