234 CYPEINIDiE. 



This species was established on three specimens from the Gota River at Marmusa 

 (21.1.02) and two from the Kassam Eiver at xiwhorra Mulka in Shoa (7.2.02), altitude 

 about 6000 feet, both rivers in the Hawash system, collected by Mr. Degen. The British 

 Museum has since received a specimen from the Akaki River, a tributary of the 

 Hawash (altitude 4500 feet), and another from the Gudar River, tributary of the Blue 

 Nile (altitude 3400 feet), collected by Mr. Zaphiro and presented by Mr. W. N. 

 McMillan. I have also examined a specimen from Lake Rudolf, forming part of 

 Baron Maurice de Rothschild's collection. 



Like B perplexicans from the Tana system, this fish might be referred to the genus 

 Capo'eta as defined by Gvinther ; but this, it seems to me, would be in violation of the 

 natural affinities, which are with B. intermedins, Riipp., just as those of B. perplexicans, 

 Blgr., are with B. tanensis, Gthr., and B. hindn, Blgr. Nevertheless, B. plagiostomus 

 evidently constitutes a connecting-link between Barbies and Varicorhinns, and, with 

 other species, bridges over the gap separating these two genera. 



Capoeta bingeri, Pellegnn (Bull. Mus. Paris, 1905, p. 291), from the Burka River 

 (Webi Shebeli), Barbus macmillani, Blgr., from Lake Gandjule, and B. bottegi, Blgr., 

 from the Omo River, are close allies of B. irtagiostomus. The first differs in having 

 the posterior barbel a little longer than the eye and the mouth broader, its width only 

 twice and two-thirds in the length of the head ; the second has the posterior barbel 

 once and one-fifth to once and three-fifths the length of the eye, and the width of the 

 mouth is contained four times in the length of the head ; whilst the third may be 

 distinguished by the longer barbels and the low number (28-30) of scales in the 

 lateral line. 



17. BARBUS PLATYSTOMUS. 



(Plate XL. fig. 2.) 



Boulenger, Ann. & Mag. N. H. (7) x. 1902, p. 430. 



Depth of body three and a half to three and four-fifths times in the total length, 

 length of head four to four and one-fourth times. Snout very broad, rounded, not quite 

 one-third the length of the head; diameter of eye five to six times in the length of 

 the head, interorbital width twice and three-fourths to three times; mouth large, terminal, 

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

 on the chin ; barbels two on each side, the anterior as long as the eye, the posterior 

 once and one-fifth to once and two-fifths, the space between them as long as the eye. 

 Dorsal fin with IV 8- 9 rays, last simple ray very strong, bony, not serrated, feebly curved, 

 three-fifths to six-sevenths the length of the head ; free edge of the fin emarginate ; 

 its distance from the occiput less than its distance from the caudal fin. Anal fin with 

 III 5 rays longest ray three-fourths to four-fifths the length of the head, reaching or 



