42 CLASSIFICATION OF FISHES. 



W 



Analogies of the Zeid^ and the Scomberid-e. 



Sub-families of j„„;„„v,. Sub-families of the 



the ScoMBERiD^ Analogies. Zeidm. 



ScoMBERiNiE, Dotsal fins distinct Centbonotinjs. 



THTMNiNiB. Dorsal fins united. Zein«. 



rBody long, sub-anguilliform,'^ 

 A , r,^„,,^,^r^ J cylindrical ; mouth and teeth f cn„,^.„ »,„.»r„ 



AlEPISAURIN^. -j ,^j.g^ . j^^^^ .^^ j^j^g^g^ ^^^ V SpH^ RSNIN& 



' pointed. 3 



rBack armed with many naked ^ 

 FisTtTLARiN^ . •< spines before the dorsal fin ;> Gasterostin^ 

 C snout sometimes lengthened, j 



V C Lower jaw short, the upper pro- 7 x^ 



XiPHiNiE. I longed and pointed. j N otocanthin^ 



These analogies are so conclusive, that we apprehend 

 they need no amplification. 



(42.) The exposition of the three last or aberrant 

 families, which we had written out for so many chap- 

 ters, must now be curtailed to as many paragraphs. 

 The CoRYPH^NiDiE, or the true dolphins, represent the 

 Gymnetres, or riband-fish, to which they also open a 

 passage from the Scomheridce ; to the latter they seem 

 connected by Alepisaurus in one, and Trichiurus in the 

 other: then follow, as sub-famUies, the CoryphcenineB, 

 StromatincB, AstrodermincPi and the Acanthurince. These 

 latter are a most charming and highly elegant group, 

 representing the file-fishes (^Balistid^) and the scares 

 (Scarina) in a manner truly surprising: it is rich in 

 species, and we have therefore been able to work out, 

 and to characterise for the first time, nearly all the sub- 

 genera. Only two or three, out of the whole of this 

 family, have been found in the British seas ; the most 

 familiar example being that of the sandlance (^Ammo- 

 dytes). 



(43.) The family of CENTRisciDiE is represented only 

 by the genus Centriscus of Linnaeus. The whole struc- 

 ture, external as weU as internal, of this singular group 



