434 Mr. G. A. Boulenger on 



B. Duchefsnii is related to B. ajinis, Riipp., but differs 

 chiefly in the longer barbels and the broader iuterorbital 

 region. 



Barhus mento. 



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

 length. Snout rounded, 15 times in length of head ; diameter 

 of eye 6 times in length of head, interorbital width 3 times ; 

 mouth inferior, its widtii 4 times in length of iiead ; lips very 

 strongly developed, the lower produced into a subtriangular 

 median lobe which is as long as the eye ; anterior barbel H, 

 posterior If. diameters of eye, the space between them a little 

 greater than diameter of eye. Dorsal TV 8, last simple ray 

 very strong, bony, not serrated, slightly curved, i length of 

 head ; free edge of the fin emarginate ; its distance from the 

 occiput a little less than its distance from the caudal. Anal 

 III 5, longest ray | length of head, reaching root of caudal. 

 Pectoral f length of head, not reaching ventral ; latter below 

 anterior rays of dorsal. Caudal peduncle 1§ as long as deep. 

 Scales 35 |i, 3 between lateral line and ventral, 12 round 

 caudal peduncle. Olive above, yellowish beneath ; fins 

 greyish. 



Total length 300 millim. 



A single specimen obtained at Marmasa (alt. nearly 

 5000 feet) in the Gota River, flowing northwards from the 

 Jebel-Amhar Mountains, Jan. 21, 1902. 



Barhus mento may be compared with B. nedgia, Eiipp., 

 from which it differs in the broader head, the broader inter- 

 orbital region, and the lesser development of tiie lips. It 

 differs from B. Diichesnii in the less elevated body and the 

 longer mental lobe. 



Barhus harsensis. 



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

 total length. Snout obtusely conical, 3 times in length of 

 head ; diameter of eye 5 times in length of head, interorbital 

 width 3j times ; mouth inferior, its width 4 times in lengtli 

 of head ; lips strongly developed, the lower forming a rounded 

 median lobe; anterior barbel H, posterior twice as long as 

 eye, the distance between them a little less than diameter of 

 eye. Dorsal III 8-9, last simple ray strong, bony, not 

 serrated, curved, | or | length of head ; free edge of the fin 

 emarginate ; its distance from the occiput a little less than its 

 distance from the caudal. Anal 115, longest ray I length of 

 head, reaching root of caudal. Pectoral ^ or •] length of 



