200 



CHARACIMD^. 



6. ALESTES SADLERI. 



Bouleng. Ann. & Mag. N. H. (7) xvii. 1906, p. 435 ; Steind. Ann. Hoftnus. Wien, 

 xxi. 1906, p. 151 ; Bouleng. Fish. Nile, p. 121, fig. (1907). 



Depth of body 3^ to 3J times in total length, length of bead 4 times 

 or a little less. Head twice as long as broad, slightly longer than deep ; 

 snout a little shorter than eye, which is lateral and 3 to 3J times in 

 length of head ; adipose eyelid feebly developed ; interorbital region 

 convex, its width 2J times in length of head ; 16 teeth (|) in upper jaw, 

 10 (|) in lower; lower border of second suborbital as long as eye. 



Fig. 1.50. 



Alestes sadhri. 

 Type (F. N.). 



Gill-rakers long and slender, 17-18 on lower part of anterior arch. 

 Dorsal II 8, just behind vertical of base of ventrals, equally distant from 

 occiput and from caudal, longest ray as long as or a little shorter than 

 head. Anal HI 16-17. Pectoral as long as head, not reaching ventral. 

 Caudal deeply forked, lobes obtusely pointed. Caudal peduncle barely 

 1^ times as long as deep. Scales with radiating and arborescent or 

 anastomosing canals, 33 ^,, 2 between lateral line and root of ventral. 

 Steel-blue above, silvery white below ; a more or less distinct dark 

 lateral band ; a black blotch on caudal peduncle, extending on middle 

 rays of caudal fin. 



Total length 94 millim. 



1 -ake Victoria. 

 1-2 Types. Entebbe. Mr. E. Degen (C). 



