BAEBUS. 13 



of 



Sc. 41-46 |p|, 4 , ls ' 20 ! last siin P le ra J 

 dorsal rather feeble, feebly serrated, ser- 

 rated part \- \ length of head ; interorbital 

 width 2^— 2J times in length of head . . 98. B. ksibi, Blgr., p. 111. 



b. Base of ventral at least partly anterior to dorsal ; lust simple ray of 

 dorsal strongly serrated. 

 Sc. 44-47 gFJjf, 5-6, 18-20 ; base of ventral 

 partly below dorsal ; snout rounded, at 

 least 3 times in length of head ; mouth 

 moderate, inferior 99. B. aiitinorii, Blgr., p. 112. 



Ql nl 



Sc. 46-50 sizfoi' ^-S, 20-22 ; base of ventral 



partly below dorsal; snout narrow and 



pointed, less than 3 times in length of head; 



mouth very narrow, inferior 100. B. nanus, Gthr., p. 113. 



Sc. 44-46 Ipll, 4-5, 20 ; base of ventral en- 



tirely in advance of dorsal ; mouth terminal. 101. B. serra, Peters, p. 114. 



2. 32-40 scales in lateral line, 5^-7i between origin of dorsal and lateral 

 line ; posterior barbel not or but little longer than eye. 



a. Base of ventral entirely in advance of dorsal. 



Sc. 34-39 |f|f, 3-4, 16-18 ; dorsal with 7 



(rarely 8) soft rays 102. B. paludinosus, Peters, p. 115. 



5- 

 Sc. 32-33 rf, 2-t, 14 ; dorsal with 7 branched 



rays ; length of head 4 times in total 



length 103. B. taitensis, Gthr., p, 117. 



Sc. 33 t?, 'i\- 3, 14; dorsal with 8 branched rays; 



length of head 4-4 £ times in total length. 104. B. pfefferi, Blgr., p. 117. 



Sc. 33 jf, 3, 14 ; dorsal with 8 branched rays ; 



length of head 3| times in total length . 105. B. mattozi, Guimar., p. 118. 



b. Base of ventral entirely or partly below dorsal. 

 a. Caudal peduncle at least If- times as long as deep, 



Sc. 32-33 §Fp, 2^-3, 14 ; dorsal with 8 

 branched rays ; length of head 3-31 times 

 in total length 106. B. rapax, Stdr., p. 1 19. 



Sc. 32-35^, 3-31, 12-14; dorsal with 7 

 branched rays ; length of head 3t~3? 

 times in total length . ....... 107. B.thikercsisj Blgr., p^ 120. 



Sc. 35 =4. 3, 16 ; dorsal with 7 branched rays; 



length of head 4 times in total length ; [p. 120. 



lateral line incomplete 108. B. pteurbcframma, Blgr., 



