new Fishes from Lake Tanganyika. 479 



Barbus platyrhinus. 

 D. 11. A. 8. L. lat. 40. L. tr. %A 



Depth of body 3£ times in total length, length of head 4. 

 Snout broad and rounded, twice as long as eye, which is 5£ 

 times in length of head, 2£ in interorbital width ; barbels two 

 pairs, subequal, as long as eye. No bony dorsal ray. Ven- 

 tral below middle of dorsal. Caudal peduncle If as long as 

 deep. 3^ scales between lateral line and root of ventral. 

 Olive-brown above, golden yellow beneath. 



Total length 390 millim. 



South of Usambura. 



Barbus altianalis. 

 D. 12. A. 8. L. lat. 35. L. tr. % 



Depth of body equal to or slightly greater than length of 

 head, 4 to 4j times in total length. Snout moderately broad 

 and rounded, 1^ to If as long as eye, which is 5 to Og- times 

 in length of head, 2 in interorbital width ; barbels two pairs, 

 subequal, as long as or a little longer than eye. Third dorsal 

 ray very strong, bony, not serrated. Longest anal ray | 

 length of head, nearly reaching caudal when folded. First 

 ventral ray corresponding to origin of dorsal. Caudal pe- 

 duncle twice as long as deep. 3 scales between lateral line and 

 root of ventral. Olive-brown, very dark above. 



Total length 350 millim. 



Lake Kivu and liusisi Biver, N.E. of Tanganyika. 



Barbus serrifer. 

 D. 10. A. 8. L. lat. 28-30. L. tr. %=%. 



Depth of body 3 to 3^ times in total length, length of head 

 4 to 4^. Snout rounded, as long as or a little longer than 

 eye, which is 4 to 4£ in length of head and 1£ to 1^ in inter- 

 orbital width ; barbels two pairs, posterior longer, twice as 

 long as eye. Third dorsal ray very strong, bony, strongly 

 serrated. Last ventral ray below first of dorsal. Caudal 

 peduncle 1£ to 1§ as long as deep. 3 scales between lateral 

 line and root of ventral. Olive-brown above, silvery white 

 below; a greyish stripe above lateral line; a small blackish 

 spot at base of caudal. 



Total length 120 millim. 



North end of Lake Tanganyika. 



32* 



