168 BERYX, &C. 



they are generally of very bright and gaudy 

 colouring. 



Beryx has many of the bones of the head 

 serrated. The eye is extremely large, but the 

 easiest seized character, in conjunction with the 

 serrating on the head, is the form of the dorsal 

 fin, placed near the centre of the body, and 

 appearing single, without any interrupting notch ; 

 the separation is only observable in the compo- 

 sition of the rays from spiny to pointed. Two 

 species are described; one is from the New 

 Holland Seas. 



4 



TrachichtySy Shaw. Characterized byDr Shaw 

 from a single specimen found in the New Holland 

 Seas. A single dorsal fin ; the spines of this and 

 the outer ones of the tail strong and rough; 

 opercles with a large rough spine ; the belly with 

 large projecting plates. The whole fish remarkable 

 ror the rugged nature of its covering whence 

 the name. 





The arrangement of the next fishes depends 

 upon the situation of the ventral fins, the dorsal 

 being either double or single. The first have the 

 ventrals placed on the throat or jugulum, or in 

 advance of the pectorals. 



