40 



CLASSIFICATION OF FISHES. 



circle of the Centronotincs, and shall now look to its 

 analogies. 



Analogies of the Zein^ and the Centronotin.e to the 

 sub-families of the Zeid^. 



Genera of the 

 Centronotincs. 



Centronotus. 



Seriola. 



Siganus. 



Trachinus. 



Elacate. 



Analogies. 



Dorsal fin single. 

 Dorsal fin double. 

 Mouth very small. 

 Lateral scales rough. 

 Dorsal single, very long. 



Sub-families of 

 the Zeidce. 



Genera of the 

 Zeints. 



Centronotinje. Lamprts. 

 ZE1N.E. Platt/somus. 



NoTOCANTHiN^. Equula. 

 GASTEROSTixi;. Zeus. 

 Sphyr^nin^. Apolectus. 



(39.) We regret that our space will not permit us to 

 dilate upon any other of those numerous relations between 

 these groups than those we have touched upon ; and 

 still more^ that we can only indicate^ with the same 

 brevity^ the mutual relations between the sub-genera of 

 one and the other^ when thus arranged. 



Analogies of the sub-genera of Seriola, Centronotus, 



and Elacate. 



Sub-genera of 

 Seriola. 



Seriola Cuv. 

 Tennodon Cv. 



N&meus. 



Platylepis. 



Psenes. 



Analogies. 



Sub-genera of 

 Centronotus. 



' V Scorpis. 



Dorsal fin entirely naked. Centronotus. 



("Dorsal fin, with minute, 

 \ scales at the base 



r Anterior dorsal fin nearly 1 yjaucrates 

 I obsolete : body banded, j ^(^^<^'^tes. 



y Under jawlongest; mouth ^ 

 J sub-vertical : lateral f *• . , . 

 1 line with the scales f ^'^'"^• 

 C large. 3 



(■ Front obtuse ; muzzle 7 tv^x.*,„o/.,o 

 \ truncated; mouth small, j Trachmctus. 



Sub-genera of 

 Elacate. 



Elacate. 

 Chironemus. 



Porthmeus. 



Tetragonurus. 



Meladerma. 



Perfect as are the relations of the first and second 

 columns, the third, or the sub-genera o{ Elacate, requires 

 another set of analogies to render them complete : we 

 have merely introduced them, in fact, that the ichthyolo- 

 gist may see how beautifidly Nomeus, Naucrates, and 

 Porthmeus represent each other. Tetragonurus also, 

 which has been strangely located by our predecessors, 



