30 On a new Mormyrid Fish from South Cameroon. 



YI. — Description of a new Barbus/?'o»i the Uganda 

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



Barlus Portali. 



Depth of body equal to length of head^ 3^ to 4 times in 

 total length. Snout rounded, longer than the eye, which is 

 4 to 4^ times in length of head and about 1| times in inter- 

 orbital width ; moulh terminal, its width about ^ length of 

 head ; li])S moderately devclojied, interrupted on the chin ; 

 barbels two on each side, anterior 1^ to 1|, posterior 2 to 2^ 

 diameters of eye, the distance between them about f diameter 

 of eye. Dorsal III 7, last simple ray strong, ossified, coarsely 

 serrated behind, mucii shorter than the head ; free edge of 

 the fin not emarginate ; its distance from the occiput less 

 than its distance from the caudal fin. Anal III 5, longest ray 

 I to I length of head. Pectoral f to ^ length of head, not 

 reaching ventral; latter below anterior rays of dorsal. 

 Caudal peduncle \^ to If times as long as deep. Scales 

 29-31 gf, 3 between lateral line and ventral, 12 round caudal 

 peduncle. Yellowish, back olive-brown ; a dark greyish 

 lateral stripe with or without two or three blackish blotches 

 in its course ; fins whitish. 



Total length 100 mm. 



Five specimens were obtained by Mr. R. B. Woosnam near 

 Fort Portal, 12 miles east of Ruwenzori, in a small stream at 

 an altitude of 4500 feet. This small stream is a tributary 

 of the Mpanga, which flows into L;ike Ruisamba, and runs 

 fairly swiftly over rocks and gravel. The only other fish 

 captured in its waters by Mr. Woosnam is Clarias Caj'soni, 

 Blgr., originally described from Fwambo, 21 miles S.S.E. of 

 Lake Tanganyika, and since rediscovered in Lake Yictoria. 



Barhus Portali is nearly related to B. zancibaricus, Peters, 

 but difl'ers in the much longer barbels. B. carpio, Pfefl^., has 

 a deeper body, fewer scales, and shorter barbels. 



YII. — Description of a new Mormyrid Fish from South 

 Cameroon. By G. A. Boulengek, F.R.S. 



Marcusenius Batisii. 



De]tth of body equal to length of head, A\ to 5 times in 

 total length. Head once and I as long as deep; snout 



