BARBUS. 



37 



length of head, interorbital width 2-f to 2| times; mouth inferior, its 

 width 4 times in length of head ; lips moderate, lower continuous across 

 chin ; two barbels on each side, subequal or posterior a little longer, 

 H to 1| diameters of eye. Dorsal III-IV 9, equally distant from 

 occiput and from root of caudal, border concave; last simple ray very 

 strong, bony, not serrated, i to f length of head. Anal III 5, reaching 

 or nearly reaching caudal. Pectoral a little shorter than head, not 

 reaching ventral ; base of latter below anterior rays of dorsal. Caudal 

 peduncle If times as long as deep. Scales longitudinally striated, 



Fie. 17. 



■;""> 



Barbus alliaruuis. 

 Type (Tr. Zool. Soc. 1000). 



34-35 c l 



3 between lateral line and ventral, 12-14 round caudal 



•-'a 



peduncle. Dark olive-brown, lighter beneath, scales darker at the base. 

 Total length 450 millim. 

 Lake Kivu and Rusisi River. 



1-2. Types. L. Kivu. 



3, Type. Rusisi lit. 



Prof. J. E. S. Moore (C). 



17. BARBUS GANANENSTS. 



Vincig. Ann. Mas. Genova, (2) xv, 1895, p. 53, pi. v. fig. 2, and xvii. 1807, 

 p. 362. 



Depth of body of to 4 times in total length, length of head 4 times 

 or a little over. Snout rounded, 3f times in length of head ; eye 3 

 times in length of head, interorbital width less than 3 times; mouth 

 small, inferior; lower lip much developed, with a sub triangular median 

 lobe ; two barbels on each side, anterior a little shorter, posterior a 

 little longer than eye. Dorsal III 9, nearer occiput than root of caudal, 

 border straight ; last simple fay strong, bony, not serrated, straight, at 

 least as long as head. Anal II 5, not reaching caudal. Pectoral a little 



