OF PISHES FEOM LAKES TANGANYIKA AND KIVU. 145 



Two specimens from Lake Kivu and one from the source of the Rusisi River. 



B. altianalis is extremely closely related to B. mariquensis Smith. It differs only 

 in the somewhat broader snout, the stronger third dorsal ray, and the somewhat longer 

 caudal peduncle. 



8. Bakbus seerifee. (Plate XIV fig. 1.) 

 Bouleng. Ann. & Mag. N. H. (7) vi. 1900, p. 479. 



Depth of body 3 to 3^ times in total length, length of head 4 to 4§^ times. Snout 

 rounded, not projecting beyond the lower jaw, as long as or a little longer than the 

 diameter of the eye, Avhich is contained 4 to 4^ times in the length of the head and IJ 

 to 1^ times in the interocular width; mouth small, with two pairs of barbels, the 

 posterior of which are the longer and measure twice the diameter of the eye. Dorsal 

 III 7 ; third ray very strong, ossified, serrated behind ; the fin, which is equally 

 distant from the eye and from the caudal, is not notched and the largest ray is a little 

 shorter than the head. Anal III 5, the longest ray | the length of the head. Pectoral 

 f to f the length of the head, reaching, or nearly reaching, the base of the ventral, the 

 last ray of which falls under the first of the dorsal. Caudal forked. Caudal peduncle 

 1^ to 1§ as long as deep. Scales 28-30 ^t^, 3 between the lateral line and the root 

 of the ventral. Olive-brown above, silvery white beneath ; a greyish stripe along each 

 side of the body above the lateral line ; a small blackish spot at the base of the 

 caudal . 



Total length 120 millim. 



Three specimens from the north end of Lake Tanganyika. 



Allied to B. kessleri Stdr. Distinguished by the smaller eye, the longer barbels, 

 the more numerous scales, and the presence of only 7 branched dorsal rays. 



9. Baebus tkopidolepis. (Plate XIII. fig. 2.) 

 Bouleng. Ann. Mus. Congo, Zool. i. p. 133, pi. xlix. fig. 2 (1900). 



Depth of body 3 times in total length, length of head 4 to 4^ times. Snout broad 

 and rounded, strongly projecting beyond the mouth, 1^ to twice as long as the diameter 

 of the eye, which is contained 4^ to 5^ times in the length of the head and 2 to 2 J 

 times in the interocular width ; mouth small, inferior ; a minute barbel almost entirely 

 concealed in the angle of the lips. Dorsal III 9 ; third ray very strong, ossified, not 

 serrated, its length at least f that of the head ; the fin, which is equally distant from the 

 occiput and the root of the caudal, is notched. Anal II 5, the longest ray about ^ the 

 length of the head. Pectoral about f the length of the head, not reaching the base of 

 the ventral, the first ray of which falls under the origin of the dorsal. Caudal forked. 

 Caudal peduncle 1^ to If as long as deep. Scales 44-46 |f, 5 between the lateral 



line and the root of the ventral ; in breeding specimens, the scales, those at least 

 which are above the lateral line on the caudal portion of the body, bear a median 

 VOL. XVI. — PAKT III. No. 2. — October, 1901. % 



