378 FISHES. 



Australia only, and does not appear to grow to the same 

 large size as its congeners. 



Allied to Latcs is Psaiimioperca from Australia. 



Pbrcalabeax. — All the teeth vihiform, without canines ; 

 teeth on the palatine hones and vomer, but none on the tongue. 

 Two dorsal fins — the first with eleven, the anal fin with three 

 spines. Prseoperculum serrated along its hinder margin, and with 

 strong spinous teeth helow ; prseorbital not serrated. Scales 

 rather small. Branchiostegals seven ; pseudohranchicTe present. 



This Perch {Percalcibi^ax japoniais) is one of the most 

 common fishes on the coasts of China, Japan, and Formosa ; 

 the Japanese name it " Zuzuki," or " Seengo." 



AcERiNA. — All the teeth villiform, without canines ; teeth on 

 the vomer, Init none on the palatine bones or the tongue. One 

 continuous dorsal fin, of which the spinous portion consists of 

 from thirteen to nineteen spines ; two anal spines. Body rather 

 low, with rather small scales. Bones of the skull Avith wide 

 muciferous cavities ; prseoperculum denticulated. 



Small freshwater perches, of which A. ccrnua, named 

 " Pope " in England, is the most common, and has the widest 

 distribution in Central Europe and Siberia. The two other 

 species have a more restricted range, A. scliroctzcr being con- 

 fined to the Danube and other rivers emptying into the 

 Black Sea ; and A. czckanoivshii to Siberian rivers. This 

 genus is not represented in the "Western Hemisphere. 



LuciopERCA. — Teeth in villiform bands, those in the jaws with 

 additional canines ; palatine bones toothed. Two dorsal fins — 

 the first with from twelve to fourteen, the anal fin with two 

 spines. Prieoperculum serrated ; scales small. 



The " I'ike-Perches " are inhabitants of many lakes and 

 rivers of the temperate northern zone. The European species 

 is confined to the eastern two-thirds of the continent, and one 

 of the most esteemed freshwater fishes ; it attains to a length 

 of three or four feet, and to a weight of from 25 to 30 lbs. 



