Class IV. 



RUFFE. 



i59 



Cernua. BeioKf i86. 



Peres iluvdatilis genus minus. 



Gefner pifc. 701. 

 Afpredo. Caii opufc. 107. 

 Ein ftuer, lluerbarrs. Schone- 



'velde^ 56. 

 Cernua iiuviatilis. Wil. Icth. 



334- 

 Rufte. Ran fyn> pifc. 143. 



Perca dorfo monopterygio, ai^ 



Ditecavernofo. Artedjyn.6%, 



Perca cernua. P. pinnis dor- 127. Ruffe, 



falibus unitis radiis 27. 



fpinis 15. Cauda bifida. 



Li7i. fyfi. 487, Grono'Vi, 



Zrjoph. No. 

 Giers, Snorgers. Faun, Suec. 



No. 119. 

 Schroll, PfafFenlaus. Schaef. 



pifc, 37. Tab, II. Wulf 



Borufs. No. 35, 



'TpHIS fifh is found in feveral of the Englijh 



"^ dreams : it is gregarious, afiembling in large 



Ihoals, and keeping in the deepeft part of the water. 



It is of a much more flender form than the perchj 

 and feldom exceeds fix inches in length. 



The teeth are very fmall, and difpofed in rows. 



It has only one dorfal fin extending along the 

 greateft part of the back : the firfi: rays, like thofe 

 of the perchj are firong, fnarp, and fpiny; the 

 others foft. 



The peroral fins confift of fifteen rays ; the 

 ventral of fix ^ the anal of eight •, the two firft 

 ftrong and fpiny : the tail a little bifurcated. 



The body is covered with rough compad fcales. 



The back and fides are of a dirty green, the 

 laft inclining to yellow, but both fpotted with 

 black. 



The dorfal fin is fpotted with black ; the tail 

 marked with tranfverfe bars. 



3 3 The 



