282 SILURID.E. 



2 (young) to 4 times in interorbital width ; width of mouth a little less 

 than interorbital width ; voinero-palatine teeth forming an uninterrupted 

 band, which is as broad as or a little broader than the band of prse- 

 maxillary teeth. Nasal barbel ^ to f length of head, maxillary barbel 

 I to § ; inner mandibular barbel about ^ length of outer, which is 

 inserted behind it and measures about ^ length of head. Gill-rakers 

 moderately long, widely set, 7 to 9 on lower part of anterior arch. 

 Dorsal I 6, exactly above ventrals, 2 to 2j times as distant from caudal 

 as from end of snout ; its spine slender, feebly serrated behind, as long 

 as or a little longer than head, produced into a filament. Anal 52-63, 

 4 or 5 anterior rays simple, the following gradually decreasing in length. 

 Pectoral reaching origin of anal or a little beyond, its spine rather 

 feebly serrated on inner side, as long as or a little longer and stronger 

 than that of dorsal. Caudal deeply forked, with pointed lobes. Caudal 

 peduncle as long as or a little longer than deep. Silvery, back brownish ; 

 fins uniform whitish (or pink); a more or less distinct dark blotch on 

 each side above the pectoral fin, corresponding to the thinner skin over 

 the air-bladder ; young sometimes with a dark lateral band. 



Total length 420 millim. 



Con^o, 



1. Ty[;c. LoAvor C onoo. Capt. Tuckey (C). 



2. Ad. Yelula, nv. Matudi, L.Congo. M. P. Delhez (C). 



:\. Ad. Monseiube, Upp. Congo. Rev. J. H. Weeks (P.). 



4-0. Ad., hgr., ct yg. Stanley Falls. Rev. W. H. Bentley (C.). 



10. Skel. . ,5 „ 



2. EUTROPIUS BANGUELENSIS, sp. n. 

 Depth of body of times in total length, length of head 5 times. Head 

 1^ times as long as broad ; snout broad, projecting slightly beyond 

 mouth, longer than eye, which is 5 times in length of head and 3 times 

 in interorbital width ; width of mouth a little less than interorbital 

 width ; vomero-palatine teeth forming an uninterrupted band, which is 

 as broad as the band of priemaxillary teeth. Nasal barbel f length of 

 head, maxillary f, inner mandibular J, outer mandibular ^. Gill-rakers 

 moderately long, widely set, 9 on lower part of anterior arch. Dorsal 

 I G, entirely in advance of vertical of ventrals, twice as distant from 

 caudal as from end of snout ; its spine slender, feebly serrated behind, 

 the rigid part as long as head, the whole ray If times as long as head. 

 Anal 59, 4 anterior rays simple, fourth nearly as long as head. Pectoral 

 reaching ventral, its spine feebly serrated on inner side, as long as and 



