BAEBUS. 24? 



23. BARBUS PORTALL 



(Plate XLV. fig. 2.) 



Boulenger, Ann. & Mag. N. H. (7) xviii. 1906, p. 36. 



Depth of body equal to the length of the head, three and two-thirds to four times 

 in the total length. Snout rounded, longer than the eye, which is four to four and 

 a half times in the length of the head and about once and a half in the interorbital 

 width; latter three times in the length of the head; lips moderately developed, 

 interrupted on the chin ; barbels two on each side, the anterior once and a half to once 

 and three-fourths, the posterior twice to twice and a half the diameter of the eye, 

 the distance between them about two-thirds the diameter of the eye. Dorsal fin with 

 III 7 rays, last simple ray strong, bony, coarsely serrated behind, much shorter than 

 the head; free edge of the fin not emarginate ; its distance from the occiput less than 

 its distance from the caudal fin. Anal fin with III 5 rays, the longest one-half to three- 

 fifths the length of the head. Pectoral fin two-thirds to three-fourths the length 

 of the head, not reaching the ventral ; latter below anterior rays of dorsal. Caudal 

 fin deeply forked. Caudal peduncle once and a half to once and two-thirds as long- 

 as deep. Scales with fan-shaped striation, 29-31 ||, 3 between lateral line and ventral, 

 12 round caudal peduncle. 



Yellowish, back olive-brown; a dark greyish lateral stripe with or without two or 

 three blackish blotches in its course ; fins whitish. 



Measurements (in millimetres). 



Total length 100 



„ „ (without caudal) 85 



Greatest depth of body 23 



Length of head 24 



Width of head 14 



Length of snout 7 



Diameter of eye 5^ 



Interorbital width 8 



Width of mouth 6 



Length of anterior barbel 8 



„ posterior barbel 11 



„ pectoral 17 



Five specimens were obtained by Mr. R. B. Woosnam near Fort Portal, 12 miles 

 east of Ruwenzori, in a small stream at an altitude of 4500 feet. This small stream is 

 a tributary of the Mpanga, which flows into Lake Ruisamba, and runs fairly swiftly 



2i2 



