new Ahyssinian Fishes. 433 



them § diameter of eye. Dorsal IV 9, last simple ray strong, 

 bony, not serrated, straight, | or § length of head ; free edge 

 of tlie fin etnarginate ; its distance from the occiput less than its 

 distance from the caudal. Anal III 5, longest ray I length 

 of head. Pectoral ^ or i length of liead, not reaching ventral ; 

 latter below anterior rays of dorsal. Caudal peduncle If or 

 twice as long as deep. Scales 33 ^K-^, 2k, between lateral 

 line and ventral, 12 or 14 round caudal peduncle. Olive 

 above, silvery on the sides and below ; dorsal and caudal 

 tins grey is!) . 



Total length 170 millira. 



Two specimens from the Jerrer, near Harrar (ca. 6000 feet), 

 Jan. 13, 1902. 



Very nearly related to B. gananensis, Vincig., from the 

 Ganana and Auata Kivers, Somaliland; distinguished by the 

 smaller eye, the narrower interorbifal space, the shorter spino 

 of the dorsal, and the longer caudal peduncle. 



Barhus Duchesnii. 



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

 head 4 to 4^ times. Snout rounded, 3 to '61 times in length 

 of head, interorbital width 3 times ; mouth infeiior, its width 

 4 times in length of head ; lips moderately developed, the 

 lower continuous; barbels two on each side, subequal, 1;| to 

 If diameters of eye. Dorsal IV 9, last simple ray very strong, 

 bony, not serrated, straight or very slightly curved, | to * 

 length of head ; free edge of the fin strongly emarginate ; its 

 distance from the occiput a little less than its distance from 

 the caudal. Anal III 5, longest ray ^- lengtli of head, reaching 

 or nearly reaching root of caudal. Pectoral nearly as long as 

 head, narrowly separated from ventral ; latter below anterior 

 rays of dorsal. Caudal peduncle 1| as long as deep. Scales 

 30-33 jf, 2^ between lateral line and ventral, 12 round caudal 

 peduncle. Colour iridescent green and blue in life; all the 

 fins dark slate-colour; iris dark, with a fine yellow circle 

 round the pupil. 



Total length 300 millim. 



Two specimens : the larger from Baliardar, Lake Tsana, 

 June 2, 1902 ; the other (250 millim. long) from the Moger 

 Hiver, a tributary of the Blue Nile, in Shoa, altitude about 

 4000 feet, April 17, 1902. 



Named after M. J. Duchesne-Fournet, the chief of the 

 French Scientific Mission of that name, who most kindly 

 assisted Mr. Degen with advice during his stay on Lake 

 Tsana. 



