BAIJBUS. 5 



Sc. 32-36 ^tip, 2-2^; dorsal with 9 j-arely 8) 

 branched rays ; snout projecting very 

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



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

 3^ to 4^ times in total length ; posterior barbel longer than 

 eye in adult, but not more than 1^ diameters. 

 Sc. 33 Vf, 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^,, 3 ; dorsal with 9 branched rays, 



its spine very strong, shorter than head ; 



anal reaching or nearly reaching caudal. . 16. B. alt'ianalis^ B'g'"-' P- '^*^- 

 Sc. 30 ^, 2\ ; dorsal with 9 branched rays, its 



spine very strong, at least as long as head ; 



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



Sc. 31-36 fl^^, 2^-3 : dorsal with 8 (rarely 9) 

 branched rays, its spine very strong, shorter 

 than head; anal not reaching caudal . . . 18. 5. areas, Blgr., p. 38. 



Sc. 30-33 4^, ^ ; dorsal with 9 (rarely 8) 

 branched rays, its spine very strong, shorter 

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



Sc. 28-30 |i, 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. gudaricvs, Blgr., p. 40. 



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

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

 least 1| diameters of eye in adult (at least 1^ in young) ; 

 spine of dorsal shorter than head. 

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

 lip produced into a subtriangular median 



lobe 2\. B. mento, Blgr.. p. 41. 



Sc. 27-32 TT^, 2i-3 ; dorsal with 8 branched 



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



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



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



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



3^4^ times in total length. 



t No subtriangular dermal lobe above the mouth. 

 51 

 Sc. 31 ^, 2^ ; spine of dorsal a little shorter 



tlian head ; barbel* equal, more than 2 



diameters of eye 24. B. eimn/stus, B]gr., ]). 'i-i. 



