EUTROPIUS. 



289 



times. Head If times as loiig as broad ; snout broad, projecting 

 slightly beyond lower jaw, as long as or longer than eye ; latter perfectly 

 lateral, 3J (young) to 5 times in length of head, 2 to 3 times in inter- 

 orbital 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 prseinaxillary teeth. Nasal barbel shorter than maxillary, 

 \ to -j length of head ; maxillary and outer mandibular barbels equal, 

 i to f length of head ; inner mandibular barbels ^ to \ length of head. 

 Gill-rakers moderately long, widely set, 10 to 12 on lower part of 

 anterior ai'ch. Dorsal I 6, entirely in advance of ventrals, If to 2 times 

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

 serrated behind, § to f length of head, produced into a short filament. 

 Anal 53-62, 4 or 5 anterior rays simple, the following gradually 



Ym. 235. 



Eutrojjius mentalis. 

 Ja Eiver. \. 



decreasing in length. Pectoral reaching ventral, its spine stronger and 

 a little longer than that of dorsal, with moderately strong inner serrated 

 edge. Caudal deeply forked, with pointed lobes. Caudal peduncle 

 a little deeper than long. Brown above, silvery beneath, or brown with 

 three silvery longitudinal streaks on each side, the median following the 

 lateral line ; a dark, ill-defined blotch on each side above the pectoral 

 fin ; fins brownish, with a more or less distinct light streak along 

 the anal. 



Total length 320 millim. 



Gold Coast, Cameroon. 

 VOL. II. u 



