554 



II. Anal with I 4 spines. 



A. All rays of dorsal flexible and articulated. 



1. Maxillary extending to below nostrils or to 

 frontborder of eye. Origin of D. midway be- 

 tween head and caudal or somewhat nearer to 

 lastnamed. 



a. Anal 2.21 24. Origin of D. opposite to 

 14. 1 6. lateral scale; 22 26 praedorsal 

 scales; interorbital space 2.4 2.9 in head. 



Uniform brown B. fusca p. 356. 



b. Anal 1.27. Origin of D. opposite to 16. or 

 17. lateral scale; about 30 praedorsal scales ; 

 interorbital space more than thrice in head. 

 Brownish with darker stripes along longi- 

 tudinal series of scales B. akarensis p. 357. 



c. Anal 2.25 30. Origin of D. opposite to 17. 

 or 1 8. lateral scale; 26 28 praedorsal scales; 

 interorbital space -_ 2.5 in head. Brown with 



darker lines along transverse series of scales. B. anabaf aides p. 357. 



2. Maxillary extending to behind frontborder of 

 eye. Origin of dorsal at least one eye-diameter 

 nearer to caudal than to head. Anal 2.27 29. 

 Height of caudal peduncle at base of caudal 



equal to postorbital part of head B. patoti p. 359. 



B. First dorsal ray a more or less pungent spine. 



1. 20 22 praedorsal scales. Anal 1.19 23. 

 Dorsal 1.6 8, its origin much nearer to head 

 than to base of caudal; opposite to 14. 15. 

 lateral scale. Height of caudal peduncle at base 

 of caudal about equal to postorbital part of 



head. Three longitudinal black bands B. picta p. 360. 



2. 25 30 praedorsal scales. 



a. Anal 3.21. Dorsal 1.7, its origin midway 

 between head and caudal; opposite to 1 6. 

 lateral scale; 28 praedorsal scales. Caudal 

 peduncle at base of caudal equal to postorbital 

 part of head. L.I. 30. Five to six dark ver- 

 tical bands on pale ground colour B. rubra p. 361. 



b. Anal 2.20 25. D. 1.7 9, its origin nearer 

 to head than to base of caudal; opposite 

 to 14. 1 6. lateral scale; 25 26 praedorsal 

 scales. Caudal peduncle at base of caudal 

 equal to or longer than postorbital part of 



