312 SILURIDJE. 



of inner and \ to nearly once length of head. Gill-rakers rather long, 

 widely set, 10 or 11 on lower part of anterior arch. Dorsal 1 9, last ray 

 in advance of vertical of inner ray of ventral; spine smooth, less than 

 \ length of head; longest soft ray \ to f length of head. Adipose 

 dor:-al 4 to b\ times as long as deep, 1^ to If times as long as rayed 

 dorsal ; the space between the two dorsal fins \ to f- the length of the 

 first. Anal 12-13 (8 or 9 rays branched). Pectoral \ to f length of 

 head, its spine moderately strong, not serrated in the adult. Ventral 

 equally distant from eye and from caudal, or a little nearer latter. 

 Caudal deeply forked, upper lobe produced into a long filament. Caudal 

 peduncle not or but little longer than deep. Blackish brown or dark 

 steel-blue above, whitish or brassy yellow beneath ; fins grey to blackish. 



Total length 490 millim. 



Lake Victoria. 



1-5. Ad., hgr., & yg., types. Entebbe. Mr. E. Degen (C). 



6. Ad., type. Near Entebbe. ,, 



5. BAGRUS UROSTIGMA. 

 Vincig. Ann. Mus. Genova, (2) xv. 1895, p. 36. 



Depth of body 6-j to 6-| times in total length, length of head 3^ 

 times. Head not more than once and \ as long as broad, smooth above ; 

 snout about f length of head; eye 8 (young) to 14 times in length 

 of head, 2 to 4 times in interorbital width ; nasal barbel reaching 

 anterior border of eye ; maxillary barbel reaching middle of adipose fin 

 in the young, end of rayed dorsal in the adult. Dorsal I 9, longest ray 

 a little longer than head ; last ray above ventral. Adipose fin twice as 

 long as its distance from rayed dorsal, which equals base of latter. 

 Anal 10-11. Pectoral spine strongly serrated on inner side. Caudal 

 forked, upper lobe slightly the longer. Reddish brown above, yellowish 

 white beneath ; caudal fin dotted with black. 



Total length 720 millim. 



Ganana River, Somaliland. — Types in Genoa Museum. 



6. BAGRUS MERIDIONALIS. 



Giinth. Proc. Zool. Soc. 1893, p. 626 ; Bouleng. Ann. Mus. Congo, Zool. ii. p. 38 

 (1902). 



Depth of body %\ times in total length, length of head 3J times. 

 Head nearly twice as long as broad, finely striated above ; occipital 



