550 Mr. G. A. Boulenger on Fishes 



tudinally, 36-40 -^, 3 between lateral line and ventral, 

 12-14 round caudal peduncle. Silvery, back brownish ; fins 

 sometimes tinged with red. 



Fifteen specimens, measuring from 55 to 140 mm., from 

 the Lucalla River at Lucalla. 



Most nearly related to B. bynni, Forsk., and B. ruspolii, 

 Vincig. ; distinguished from both by the proportions of the 

 head and body, the larger eye, the more anterior position of 

 the dorsal fin, and from the latter by the higher number of 

 scales in the lateral line. 



20. Barbus rocadasi, sp. n. 



Depth of body 3 to 3^ times in total length, length of 

 head 3^ to 4 times. Snout rounded, 2| to Z\ times in 

 length of head ; eye 3 (young) to 5 times in length of head, 

 interorbital width 2f to 3 times ; mouth inferior, its width 

 3 to 3| times in length of head ; lips moderately developed, 

 lower continuous across chin (sometimes interrupted in the 

 young), but not forming a median lobe; two barbels on 

 each side, anterior a little shorter than posterior, which is as 

 long as or a little longer than eye. Dorsal III-IV 9 (rarely 

 8 or 10), equally distant from anterior or posterior border of 

 eye and from caudal, border concave, last simple ray very 

 strong, bony, not serrated, straight or feebly curved, f to 

 once length of head. Anal III 5, not reaching caudal. 

 Pectoral as long as or a little shorter than head, not reach- 

 ing ventral ; base of latter below anterior soft rays of dorsal. 

 Caudal peduncle 1^ to 1^ times as long as deep. Scales 

 finely striated longitudinally, 30-35 ^7% 2^-3 between 

 lateral line and ventral, 12 round caudal peduncle. Olive- 

 brown above, scales edged with darker, whitish beneath; fins 

 dark in the adult, orange at the base, ventrals and anal 

 edged with yellow or orange. 



Numerous specimens, measuring 65 to 350 mm., from the 

 Quanza and Lucalla Rivers. 



This species may be placed near B. duchesnii, Blgr., from 

 Abyssinia ; distinguished by shorter barbels. 



21. Barbus gulielmi, sp. n. 



Depth of body 3| to 4 times in total length, length of 

 head 3§ to 4 times. Snout obtusely pointed, 3 times in 

 length of head ; eye 3^ times in length of head, interorbital 

 width 3 to 3^- times; mouth inferior, its width 4 to 4>\ times 

 in length of head ; lips feebly developed, lower continuous 



