306 



SILUEID.E. 



rather lonf^, widely set, 11 to 16 on lower part ol anterior arch. 

 Dorsal I 9-11 (usually 10), last ray behind vertical of inner ray of 

 ventral; spine smooth, moderately strong, -3 to f length of head ; 

 anterior soft rays more or less produced into filaments. Adipose dorsal 

 3^ to 5 times as long as deep, about twice as long as rayed dorsal, 

 from which it is narrowly separated. Anal 13-15 (9-10 branched). 



Fis. 244. 



BcKjrus hayad. 

 Near Cairo (F. N.). l. 



Pectoral f to ^ length of head, its spine moderately strong, feebly 

 serrated on inner side. Ventral nearly equally distant from end of 

 snout and from caudal. Caudal deeply forked, each lobe produced into 

 a long filament. Caudal peduncle a little longer than deep. Pale grey 

 to dark brown above, white beneath ; fins yellow, caudal sometimes red ; 

 dark dots sometimes scattered on body and fins. 



Total length 650 millim. 



Nile System, Chad Basin, Senegal, Niger. 



L. Loat, Esq. (C). 



Dr. Riippell (C). 



J. Petherick, Esq. (C). 



L. Loat, Esq. (C). 



