4 CYPRINID^. 



Sc. S3-36 5^1, 4; posterior barbel ]| to 2 

 diameters of eye ; interorbital width 3 to 3^ 

 times in length of head ; lower lip not form- 

 ; ing a median lobe 6. B. riieppelH, Blgr., p. 25. 



y. 27-39 scales in lateral line, 2|-3^ between lateral line and ventral §, 

 12-14 round caudal peduncle ||. 

 * Interorbital width 2^ to 3 times in length of head 1[. 



t Depth of body much greater than length of head, 2§ to 3^ times 

 in total length ; posterior barbel usually longer than eye. 

 Sc. 31-39iHf, 3-4 ; dorsal with 9 (rarely 8 



or 10) branched rays, its spine usually as 



long as head or longer ; posterior barbel 



1 to 1^ diameters of eye 7. B. bi/nni, Forsk., p. 26. 



Sc. 32-34 ^^, 2^ ; dorsal with 9 branched 



rays, its spine longer than head ; posterior 



barbel a little longer than eye S. B. nispolii, Vincig., p. 23. 



Sc. 30-35 341, ^ ; dorsal with 9 branched 



rays, its spine shorter than head ; posterior 



barbel 1 (young) to 2 diameters of eye, 



much longer than anterior 9. B. erlangeri, Blgr., p. 29. 



Sc. 30 tI, 3 ; dorsal with 8 branched rays, its 



spine as long as head ; posterior barbel 1^ 



diameters of eye, scarcely longer than an- 

 terior 10. B. kassamens/s, Blgr., p. 30. 



Sc. 29-33*^, 21-3 ; dorsal with 9 (rarely 8) 



branched rays, its spine shorter than head 



in adult ; posterior barbel 1^-2 diameters 



of eye, as long as or a little longer than 



anterior 11. B. duchesnii, Blgr., p. 31. 



Sc. 27-28^, 2| ; dorsal with 8 branched rays, 



its spine longer than head in adult . . .12. B. occidentalis, Blgr., p. 32. 



tt Depth of body equal to or a little greater than length of head, 

 3 10 4^ times in total length ; posterior barbel not longer tlian 

 eye ; spine of dorsal shorter than head. 

 Sc. 32-36 f|, 3-3^; dorsal with 8 (rarely 9) 

 branched rays ; snout projecting consider- 

 ably beyond mouth , . . IS. B. lohogevys, Blgr., p. 33. 



§ Exceptionally 4 in B. bynni, 2 in B. radcliffii. 



II Exceptionally 16 in B. bynni. 



% Exceptionally 3| times in B. margaritoe. 



