104 



CYPKINID^. 



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

 long, 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 diameter of the eye, which is two- 

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

 the lower, which 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, Forsk. p. 71. no. 103 ; L. Gm. i. p. 1414, 



B^ni, Sonnini, pi. 27. fig. 3. 



Cyprinus lepidotus, Geoffr. St. Hil. Descript. de VEg. Poiss. pi. 10. 



tig. 2. 

 Barbus bynni, Cuv. Sf Vol. 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 three series of scales between the lateral line and the root 

 of the ventral fin. Upper and lower lip sometimes with a vjell- 

 developed lobe, nearly as long as the eye, sometimes vithout a trace of 

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

 dorsal fin, where the lieight of the body is one-thii-d 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. Upper Nile. From Mr. Petherick's Collection. 

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



The skeleton is distinguished by the shortness of the vertebrae, 

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

 enlarged dorsal spines ar-' proportionally developed, the preceding 

 intcrneural spines forming a continuous series to the occipital crest. 



45. Barbus nedgia. 



Labeobarbus nedgia, liiipp. 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 



