IS'ANNOCHAEAX. 283 



of the caudal, which is traversed by a greyish bar; dorsal with small 

 dark spots forming transverse series. 



Nannocharax interniedius. 

 Type. 



Total length 65 millim. 

 South Cameroon. 



1-4. Types. Kribi River. G. L. Bates, Esq. (C; 



5. Ad. Nyong River. ^^ 



6-16. Ad. & hgr. Ja River at Bitye. „ 



5. NANNOCHARAX NILOTICUS. 



Coregonus niloticus, JoanniSj Mag. Zool. 1835, iv. pi. vii. 



Nannocharax niloticus, Giinth. Ann. & Mag. N. H. (3) xx. 1867, p. 113 ; Bouleng. 

 Poiss. Bass. Congo, p. 198 (1901) ; Werner, Sitzb. Ak. Wien, cxv. i. 1906, 

 p. 1129, pi. iii. fig. 10 ; Bouleng. Fish. Nile, p. 150, pi. xxi. fig. 4 (1907). 



? Namiocharax niloticus, var. lateralis, Werner, t. c. p. 1130, pi. iii. fig. 1. 



Depth of body 5 to 6 times in total length, length of head 4 to 5 times. 

 Head as deep as broad ; snout nearly as long as or a little shorter than eye, 

 which is 3 times or nearly 3 times in length of head; interorbital width 

 slightly less than diameter of eye. Dorsal III 9-10, originating above 

 base of ventrals, situated at equal distance from end of snout and from 

 caudal or a little nearer former, longest ray f to once length of head. 

 Anal III 7-8. Pectoral shorter than head, not reaching, or just 

 reaching, root of ventral. Caudal forked, lobes acutely pointed. Caudal 

 peduncle 2 to 2^ times as long as deep. Scales 50-55 y|, 5 between 

 lateral line and root of ventral. Pale olive above, white below ; a 

 silvery lateral streak just below lateral line; 8 to 12 brown bars across 

 the back, and a series of 6 to 8 round, oval, or square, more or less 

 distinct brown spots along lateral line ; small vertical bars sometimes 

 present below lateral line ; a small dark spot on base of caudal ; three 



