BAKBUS. 5 



Sc. 32-36 i^l, 2-2i; dorsal with 9 (rarely 8) 

 branched rays ; snout projecting very 

 slightly beyond mouth 14. B. radcliffii, Blgr., p. 34. 



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

 3"? to 4"r times in total length ; posterior barbel longer than 

 eye in adult, but not more than H diameters. 

 So. 33 '=!, 3 : dorsal with 8 branched rays, its 



spine rather feeble, shorter than head ; anal [p. 36. 



reaching caudal 15. B. marequensis, A. Smith, 



Sc. 34-35 gf, 3; dorsal with 9 branched rays, 

 its spine very strong, shorter than head : 

 anal reaching or nearly reaching caudal. . 16. B. altiancdis, Blgr., p. 31*. 



Sc. 30 jt, 2i ; dorsal with 9 branched rays, its 

 spine very strong, at least as long as head ; 

 anal not reaching caudal 17. B. gananensis, Vineig., p. 37. 



9) 



Sc. 31-36 §Ht, 2i-3 : dorsal with 8 (rarely 



branched rays, its spine very strong, shorter 



than head; anal not reaching caudal . . . 18. B. nreas, Blgr., p. 38. 

 Sc. 30-33 iprp 2"f ; dorsal with 9 (rarely 8) 



branched rays, its spine very strong, shorter 



than head ; lips strongly developed . . . 19. B. margaritce, Blgr., p. 39. 

 Sc. 28-30 Vj, 2 "; ; dorsal with 9 branched rays, its 



spine very strong, shorter than head ; depth 



of body a little greater than length of head . 20. B. gudaricus, Blgr., p. 40. 



fttt Depth of body equal to or a little greater than length of 

 head, 3i to 4 times in total length ; posterior barbel at 

 least If diameters of eye in adult (at least 11 in young) ; 

 spine of dorsal shorter than head. 

 Sc. 35 r|, 3 ; dorsal with 8 branched rays ; lower 

 lip produced into a subtriangular median 



lobe 21. B. mento, Blgr., p. 41. 



Sc. 27-32 jt^t, 21-3 ; dorsal with 8 branched 



rays 22. B. reinii, Gthr., p. 42. 



Sc. 27-30 % 2^-3; dorsal with 9 branched rays. 23. B. batesii, Blgr., p. 43. 



'a 



** Interorbital width more than three times in length of head ; 

 depth of body equal to or a little greater than length of head 

 3?p-4| times in total length, 

 t No subtriangular dermal lobe above the mouth. 

 Sc. 31 'fi, 2"? ; spine of dorsal a little shorter • 

 than head ; barbels equal, more than 2 

 diameters of eye 24. 7?. eumydvs, Blgr.. p. 44. 



