168 PISCES. 



Echeneis (Linn.). Remora. Characters as above. 

 E. remora. Fig. 254 ; J n. s. 



254 



FAMILY III. PLEUEONECTID^:. 

 (Flat-fishes.) 



Greatly compressed, always resting on one side, 

 which is destitute of colour ; head unsymmetrical ; 

 eyes both on the same (the upper and coloured) 

 side ; dorsal extending along the whole back ; anal 

 nearly as long, on the opposite edge ; air-bladder 

 wanting ; six gill-rays. 



255 



Solea (Cuv.). Sole. Eyes on the right side; 

 mouth twisted on the opposite side ; teeth in both 

 jaws, but only on the left side ; body long-oval. 



S. vulgar is. 

 pegusa. 



Fig. 255 ; J n. s. 



