104 



CYPEINID.T.. 



lateral line and the root of the ventral fin. Body compressed, ob- 

 loncr, its depth being two-sevenths of the total length (without 

 caudal). The length of the head one-fourth. Snout pointed, of 

 moderate length, longer than the cHameter of the eye, which is two- 

 ninths of the length of the head. The upper barbel is shorter than 

 the lower, wliich is as long as the eye. Upper jaw overlapping the 

 lower. Interorbital space narrow, slightly convex. The dorsal fin 

 is considerably lower than the body ; its origin is somewhat before 

 that of the ventral, and nearer to the end of the snout than to the 

 root of the caudal. Anal fin moderately deep, its rays not reaching 

 by far the root of the caudal, if laid backwards. Fork of the caudal 

 fin of moderate depth. Body uniform silvery. 



Angola. 

 a-d. From 3 to 4| inches long. Polungo Alto. Presented by Dr. 

 Welwitsch. 



44. Barbus bynni. 



Lepidotus, Athen. vii. c. 17. 



Cyprinus bynni, For.'ik. p. 71. no. 103 ; L. Gm. i. p. 1414. 



Beni, Sonnini, pi. 27. fig. 3. 



Cyprinus lepidotus, Geoff): St. HU. Descript. de TEg. Poiss. pi. 10. 



fig. 2. 

 Barbus bj-nni, Ctn: Sf Val. xvi, p. 174. 



D. 13. A. 8. L. lat. 35. L. transv. 7/5. Vert. 24/17. 



The osseous dorsal ray is exceedingly strong, normally longer 

 than, but frequently only as long as, the head, not serrated behind. 

 There are thi'ee series of scales between the lateral line and the root 

 of the ventral fin. Upper and lower Up sometimes ivith a ivell- 

 deveJoped lobe, nearly as long as the eye, sometimes ivitliout a trace of 

 it. Body strongly compressed, back elevated below the origin of the 

 dorsal fin, where the height of the body is one-third of the total 

 length (without caudal). The length of the head is contained four 

 times and one-third in the same length. Snout somewhat pointed, 

 ■with thick lips ; mouth inferior. Caudal deeply forked. 



Nile. 

 a-e. Adult. Lower Nile. From Mr. Petherick's Collection. 

 f-n. Half-grown. Chartoum. From Mr. Petherick's Collection. 

 0. Half-grown. I'pper Nile. From Mr. Petherick's Collection. 

 p. Adult: skeleton. Chartoum. From Mr. Petherick's Collection. 



The sl-eletOH is distinguished by the shortness of the vertebra, 

 their centram being as deep as long. The interneurals of the 

 enlarged dorsal spines are proportionally developed, the preceding 

 intcrneiu'al spines forming a continuous series to the occipital crest. 



45. Barbus nedgia, 



Labeobarbiis nedgia, Riipp. Mus. Senckenb. ii. 1837, p. 14, taf. 2. fig. 3. 

 D. 12. A. 9. L. lat. 32. 

 The osseous dorsal ray is of moderate strength, smooth. There 

 are three and a half longitudinal series of scales between the lateral 



1 



