548 ME. G. A. BOULENGEE ON A COLLECTION 



Gill-rakers moderately long, 18 or 19 on lower part of anterior arch. Dorsal II 8, 

 behind vertical of base of ventrals, originating much nearer root of caudal than end of 

 snout, longest ray about f length of head. Adipose fin small, about twice as far 

 from rayed dorsal as from root of caudal. Anal III 12-13. Pectoral as long as head, 

 not reaching ventral. Caudal forked. Caudal peduncle once and f to twice as 

 long as deep. Scales 28-29 ||, 1 between lateral line and ventral. Olive-green above, 

 silvery below, with an ill-defined pink band along each side, beginning on the gill- 

 cover ; a large blackish (in life dark greenish) patch on caudal peduncle and root of 

 caudal. 



Total length 300 millim. 



Several specimens from Niamkolo, Mtondwe Bay, and Lofu. Native names : Eolo- 

 Jcolo and Eologo. 



This is the fish previously recorded by me, from a single badly preserved specimen, 

 as A. macrolepidotus C. & V. But that species, of which I have examined over 100 

 examples from the Nile and from West Africa, has never more than 26 scales in the 

 lateral line. A. hatesii Blgr., from South Cameroon, agrees with the Tanganyikan species 

 in the number of scales in the lateral line as well as in the number of anal rays, but 

 there are two series of scales between the lateral line and the root of the ventral fin, 

 the head is shorter in the adult, and the caudal peduncle is shorter, as in A. macro- 

 lepidotus. A. grandisquamis Blgr., from the Congo, and A. brevis Blgr., from Guinea, 

 are other close allies of the Tanganyikan form, but both have a shorter head and a 

 shorter caudal peduncle, and the first has 24 to 27 scales in the lateral line and 13 or 

 14 anal rays, the second 21 to 23 scales in the lateral line and 16 to 18 anal rays. 



9. CiTHARINUS GIBBOSDS Blgr. 



Niamkolo. Native name : Imbaza. 



Dr. Cunnington measured a large specimen, which had been speared by the natives ; 

 its total length was 540 millim. 



Ctprinid^. 



10. Labed cylindeicus Peters. 



Two specimens, both with 10 branched rays in the dorsal fin, from Utinta. Native 

 name : Bimanda. 



Grows, according to Dr. Cunnington, to a length of 360 millim. 



" Dark olive-green to almost black above, lighter below, with the belly greyish ; 

 scales with darker outlines ; all fins dark greenish black, darker between the rays." 



L. cylindricus, which is very nearly related to the Nilotic L. forskalii, has a wide 

 distribution in East Africa, from Abyssinia to the Zambesi. 



