-^0 CHAKACINID.E. 



Head not deeper than broad : dei)th o£ body 

 5 to (j times in total length ; pectoral 



shorter than head ; Sc. 50-55 p, . . . 5. N. niloticus, Joann., p. 283. 

 Head not deeper tlian broad ; depth of budy 

 6^ to 7^ times in total length ; pectoral 



shorter than head ; Sc. 52-57 ^ . . . 0. ^\ elongatns, Blgr., p. 284. 

 B. Lateral line incomplete, reduced to a few tubules ; Sc. 50 M ; length of 

 head 3 times in total length ... 7. A', ocellkauda, Blgr., p. 285. 

 II. Dorsal originating well in advance of ventrals, with 11 or 12 branched rays ; 

 head deeper than broad, 4 to 4^ times in total length ; depth of body 

 4^ to 5 times in total length; pectoral shorter than head. 

 Sc. 48-49 '^^ y. 2s. tcenia, Blgr., p. 286. 



* '^'" To^ 9. A", dlmidiatus, Pellegr., p. t^i]. 



1. NANNOCHAHAX BREVIS. 

 Bouleng. Ann. Mus. Congo, Zool. ii. p. 27, pi. viii. fig. 2 (1902). 



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

 Head deeper than broad ; snout as long as eye, which is a little more 

 than 3 times in length of head and equals interorbital width. Dorsal 

 III 10, originating above base of ventral, situated a little nearer end of 

 snout than caudal, longest ray equal to or a little greater than length 

 of head. Anal III 6. Pectoral as long as head, extending beyond root 



Fie. 213. 



Na n n ocharax brevis. 

 Type (A. M. C). 



of ventral. Caudal forked, with pointed lobes. Caudal peduncle twice 

 as long as deep. Scales 37-38 ^t, 4 between lateral line and root of 

 ventral. Olive above, yellowish beneath ; 5 large brown spots across 

 the back, and two bars of the same colour on the caudal peduncle ; 

 a series of dark spots on each side ; a black spot at base of caudal fin 

 and a blackish spot or bar across each lobe of the latter. 



Total length 45 millim. 



Upper Congo. — Type in Congo Museum, Tervueren. 



