200 



CHARACINID.E. 



6. ALESTES SADLERI. 



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

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



Depth of body 3| to 3J times in total length, length of head 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 3| times in 

 length of head ; adipose eyelid feebly developed ; interorbital region 

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

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



Kg. 150. 



Akstes sadleri. 

 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 

 \\ 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). 



