20 CLASSIFICATION OF FISHES. 



example^ indeed^ of the Serranus cahrillu, common in 

 Sicily^ has hitherto been found in Cornwall. Their 

 colours are very beautiful^ being generally varied with 

 dark bands and bright spots. Their mcst obvious dis- 

 tinction from the perches is in having but a single dorsal 

 lin j and most have a canine tooth on each side. In 

 the typical genus Serranus we have succeeded, as we 

 believe, in determining all the five sub-genera. So 

 beautifully, indeed, do the contents of this sub-family 

 represent those of the last, that it might almost be said 

 every species finds its prototype. If we merely place 

 the genera of the two groups together, their analogies 

 are most complete. 



Analogies of the Percin^ and the Srrraxin^.. 



Genera of /f„„;^„;^„ Genera of the 



PERCiNi. Analogies. Serranlv^. 



Perca. f Body oblong or ovate; mouth 1 serranus. 



X horizontal, large, J 



E.V0PL0SU8. [ ^'fgi^°''' '"""'^''^ ' """"^^ ] Pevta ceros. 



f Muzzle broad, projecting over] ^^erina 



AsPRO. ^ jjjg jQ^gj j^^_ j ACERINA. 



rr, „^ f Mouth sub-vertical, large ; low- 7 --, „^.^^„^ 



"^«°- . \ er jaw longest. JGr^stes. 



\Porov f^^^' ^^^^ developed; eyes re- 1 £>„, ,, 



APOGO.v. ^ markably large. j ^telis. 



(19.) Again, on looking to the sub-genera of the two 

 typical divisions, Perca and Serranus, the analogies are 

 no less extraordinary. 



Sub-gcneraofthe Jf,yyjnaiy, Sub-genera of the 



genus Perca. .iTuuugKs. genus Serranus. 



Perca Cuv. J ^'|;f ^^^^ ^''^''^^ ' '^"'^''^] S'^'"^"""* ^uv. 



Lates Cuv. Body broad ; caudal fin rounded. Chromileptes Sw. 



Centropomus Cuv. Anal spines very large Plectropoma Cuv. 



Kiphon Cuv. Lower jaw considerably longest. Cynichthys Sw. 



Luciopcrca Cuv. pall^gjeatly forked; eyes veryj y^^.^j^ g^ 



