OF PISHES FROM LAKES TANGANYIKA AND KIVU. 143 



The dark transverse bands, 6 to 8 in number, characteristic of this species, are very 

 strongly marked in one of the specimens. 



The ascertained range of this Polypterus in the Congo is from the region of the 

 cataracts to the Stanley Falls. 



TELEOSTEI. 



ChARACIMDjE. 



2. Alestes macrophthalmus Gthr. 



When this species was first recorded from Lake Tanganyika, it was only known 

 from the Gaboon. It has since been found in Lake Mweru and in the Congo. 



3. Alestes macrolepidotus C. & V. 

 Kalambo. 



4. Citharinus gibbosus Blgr. 



Kalambo. The largest specimen measures 500 niillim. 



When I described this fine fish from the Congo, I expressed the opinion that it 

 would probably turn out to be the same as one of which I had seen a coloured sketch 

 made by Mr. Moore on his first expedition. 



C Y F r I X I D .E. 



5. Capoeta T.iNGANic^. (Plate XII. fig. 1.) 

 Bouleng. Ann. & Mag. N. H. (7) vi. 1900, p. 478. 



Depth of body 3f to 4 times in total length, length of head 5 times. Snout broad 

 arid rounded, as long as or slightly longer than the eye, the diameter of which is 

 Sj times in the length of the head and nearly twice in the interocular width ; the 

 width of the mouth equals f that of the head; a minute barbel, hidden under the lip 

 at the angle of the mouth. Dorsal III 9 ; third ray very strong, ossified, smooth ; the 

 fin, which is equally distant from the eye and from the caudal, has the free edge notched, 

 and its greatest depth equals the length of the head. Anal III 5 ; the longest ray 

 measures J the length of the head. Pectoral acutely pointed, as long as the head, not 

 reaching the ventral, which is inserted under the first rays of the dorsal. Caudal 

 forked. Caudal peduncle twice as long as deep. Scales 68-70 |^^, 9 or 10 between 



the lateral line and the root of the ventral. Olive above, each scale darker at the base, 

 silvery white beneath ; fins greyish. 



Total length 320 millim. 



Three specimens from the north end of Lake Tanganyika. 



The discovery of a species of this genus in Lake Tanganyika is particularly 

 interesting from the fact that only one was known from Africa, viz. the Abyssinian 



