12 CYPIUNJP.E. 



2. Lower jaw projecting beyond snout. 

 Sc. 32-35 pi^. 2i, 12 90. B. progenys, Blgr., p. 102. 



II. Exposed surface of scales with radiating canals (see fig. 1, p. 2, B, 0), which, 

 as a rule, are very numerous in the species with small scales, and less 

 numerous, or even restricted to a few, in those with large scales * ; dorsal 

 fin with 6 to 8 (rarely 9) branched rays, anal with 5, rarely 6 f. 



A. Last simple dorsal ray enlarged, bony, forming a strong spine which is 



not serrated behind ; two barbels on each side. 



1. Depth of body 3-4 times in total length ; snout not longer than eye. 



Sc. 30-35 (rarely 36) -\x^, 3-4 ; dorsal with 8 



(very rarely 7) branched rays, its spine not [p. 103. 



longer than head 91. B. trimaculatus, Peters, 



Sc. 36-39 ^gr 2 , 4 ; dorsal with 8 branched rays, 



its spine not longer than head 92. B. nummifev, Blgr., p. 105. 



gi 

 Sc. 36-37 gf, 3|— 4 ; dorsal with 7 branched rays, 



its spine a little longer than head .... 93. B. jacksonii, Gthr., p. 106. 



2. Deptli of body 4J times in total length ; snout a little longer than eye. 



fi-i 



Sc. 37 gf, 3J 94. B . pappenlmmi, Blgr., p. 107. 



B. Last simple dorsal ray more or less enlarged, bony, at least in the basal 



third, and serrated behind t ; two barbels on each side. 

 ~>- 1. 40-51 scales in lateral line, 7^-lOJ between origin of dorsal and lateral 

 line. 

 a. Base of ventral entirely below dorsal. 



Sc. 48-51 glim ) ^2~^> 20-22 ; last simple ray 

 of dorsal very strong, strongly serrated, 

 serrated part |— § length of head ; inter- 

 orbital width 2|— 3 times in length of head . 95. B. biscarensis, Blgr., p. 108. 



Sc. 40-47 gt|f, 4-5, 18-20 ; last simple ray 

 of dorsal very strong, strongly serrated, 

 serrated part |-|- length of head ; inteu- 

 orbital width 2|-3 times in length of head . 96. B. callensh, CI. & V., p. 109. 



Sc. 40-45 -Hrf, 4-5, 18-20 ; last simple rav of 

 dorsal moderately strong, more or less 

 strongly serrated, serrated part f— | length 



of head ; interorbital width 2|-3 times in [p. 110. 



length of bead 97. B. setivimensis, C. & V., 



* In the former (B. 1 of this synopsis), as in B.jliwiatilis, the vertebrae number 40 to 

 49 (22-28+17-21) ; iu the latter they number only 33 to 38 (17-21 + 13-18). 

 t In B. capensis, p. 14. 

 % Except in aberrant specimens of B. hdlotouiia , p. If!. 



