554 Mr. G. A. Boulenger on Fishes 



31. Barbus aurantiacus, sp. n. 



Depth of body equal to length of head, 3§ to 4 times in 

 total length. Snout rounded, shorter than eye, which is 2§ 

 to 2f times in length of head and equals interorbital width ; 

 mouth subinferior, its width 3^ times in length of head ; lips 

 moderately developed, interrupted on the chin ; two minute 

 barbels on each side. Dorsal III 8, equally distant from 

 end of snout or anterior border of eye and from root of 

 caudal, border slightly concave ; last simple ray flexible, not 

 enlarged, not serrated, as long as head. Anal III 5, not 

 reaching caudal. Pectoral | to % length of head, not reaching 

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

 peduncle If to 2 times as long as deep. Scales radiately 

 striated, 26-28 JT, 2-2^ between lateral line and ventral, 

 12 round caudal peduncle. Pale olive-brown above, each 

 scale with a dark brown spot ; a blackish streak on each side 

 of the head, passing through the eye, continued as a series 

 of spots along the lateral line ; lower parts yellowish, more 

 or less tinged with orange; basal half or two-thirds of fins 

 bright orange. 



Five specimens, measuring 54 to 87 mm., from the Lucalla 

 River at Lucalla. 



Most nearly related to B. doggetti, Blgr., from Lake 

 Victoria; distinguished by the larger eye and fewer scales 

 in the lateral line (26-28 instead of 29). 



32. Barlus musumbi, sp. n. 



Depth of body 2^ to 3^ times as long as deep, length of 

 head 3 to 3§ times. Snout rounded, shorter than eye, which 

 is 2^ to 3 times in length of head and equals interorbital 

 width; mouth small, subinferior; lips feebly developed ; two 

 barbels on each side, posterior the longer and ^ to ^ diameter 

 of eye ; males with small nuptial tubercles on lips and sides 

 of snout. Dorsal III 8, equally distant from eye and from 

 root of caudal, border straight or slightly concave; last 

 simple ray flexible, not enlarged, not serrated, as long as 

 head. Anal III 5, not reaching caudal. Pectoral about 

 | length of head, not reaching ventral ; latter below anterior 

 rays of dorsal. Caudal peduncle 1| to 1^ times as long as 

 deep. Scales radiately striated, 22-25 3 f, 1^ between lateral 

 line and ventral, 8 round caudal peduncle. Yellowish or 

 pale olive above, scales often edged with black ; top of head 

 sometimes black ; a more or less distinct black or blackish 

 bar behind the gill-opening; fins red or blackish. 



