new Ahyssinian Fishes. 435 



head, not reacliiiig ventral ; latter somewhat posterior to 

 origin of dorsal. Caudal peduncle 1,^ or 1^ as long as deep. 

 Scales 32-34 -t-% 3 between lateral line and ventral, 12 or 

 14 round caudal peduncle. Olive above, golden on the sides ; 

 fins yellowish green ; iris golden yellow. 



Total length 210 millim. 



Two specimens from the Ilurso River, Upper Adal 

 country, altitude about 7000 feet, Jan. 17, 1902. A third 

 badly preserved specimen from the Gota River probably 

 belongs to the same species. 



The longer barbels and the broader interorbital space 

 distinguish this species from Riippell's B. affinis, to which it 

 is most nearly related. 



Barb us Degeni. 



Depth of body Sj? to 4^ times in total length, length of 

 head 3^ to ?>t times. Snout pointed, 2'z to 3 times in length 

 of head; diameter of eye 5 to 8^ times in length of head, 

 interorbital width \\\ times ; snout produced into a triangular 

 dermal flap overhanging the lip ; mouth inferior, its width 4^ 

 to 5^ times in length of head ; lips very strongly developed, 

 the lower produced into a rounded median lobe which measures 

 ■^ to I the diameter of the eye ; anterior barbel 1 to 1 ^, poste- 

 rior li to 1^ diameters of eye, the space between them equal 

 to or a little less than diameter of eye. Dorsal IV 9, last 

 simple ray very strong, bony, not serrated, straight or slightly 

 curved, \ to | 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 ^ to n length of 

 head, reaching or nearly reaching root of caudal. Pectoral 

 J to I length of head, not reaching ventral ; latter below 

 anterior rays of dorsal. Caudal peduncle 1^ to In as long as 

 deep. Scales 31-35 ^|^f, 2^ or 3 between lateral line and 

 ventral, 12 round caudal peduncle. Head and upper part of 

 body dark slate-colour, sides dark green, belly yellowish 

 green, in life ; caudal green, other fins steel-grey ; iris dark 

 bronzy. 



Four specimens, measuring 225 to -loO millim., from Lake 

 Tsana. The largest was obtained at Zegi, May 27, 1902, the 

 others at Bahardar, June 1 and 4, 1902. 



This fine Barhus is closely allied to B. nedgia, differing in 

 the less developed mental lobe and the absence of an upper 

 labial lobe, which is re[daced by a similar appendage formed 

 by the skin of the snout above the lip. 



