354 



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. — 16. lateral scale; 22 — 26 praedorsal 



scales; interorbital space 2.4 — 2.9 in head. 



Uniform brown />. fusca p. 356. 



/;. 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 18. lateral scale ; 26 — 28 praedorsal scales; 



interorbital space + 2.5 in head. Brown with 



darker lines along transverse series of scales. B. anabatoldcs 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. pic/a p. 360. 



2. 25— 30 praedorsal scales. 



a. Anal 3. 21. Dorsal 1.7, its origin midway 

 between head and caudal; opposite to 16. 

 lateral scale ; 28 praedorsal scales. Caudal 

 peduncle at base of caudal equal to postorbital 

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

 tical bands on pale ground colour B. rubra p. 36 1. 



l>. Anal 2.20 — 25. D. 1.7 — 9, its origin nearer 

 to head than to base of caudal; opposite 

 to 14. — 16. lateral scale; 25 — 26 praedorsal 

 scales. Caudal peduncle at base of caudal 

 equal to or longer than postorbital part of 



