BLOCK S TOPKNOT. 



SUBBRACHJAL 



MALACOPTERYGII. PLEURONECTID&. 



BLOCK'S TOPKNOT. 



Rhombus punctatus, Block's Topknot, YARRELL. 

 Pleuronectes ,, BLOCK, pt. vi. pi. 189. 



,, ,, FLEM. Wern. Mem. vol. ii. p. 241. 



Phil. Zool. pi. 3, fig. 2. 

 Brit. An. p. 196, sp. 99. 



Rhombus unimaculatus , Risso, Hist. torn. iii. p. 252, fig. 35. 

 Pleuronectes punctatus, Block's Topknot, JENYNS, Man. Brit. Vert. p. 462, 



sp. 150. 



BY an oversight, the use of a looking-glass was omitted 

 when making the drawing of this fish on the wood from 

 the specimen, and the figure therefore appears with the eyes 

 and the colours on the right side, like a Platessa, instead of 

 on the left, as in a true Rhombus. The fish ought to 

 have been represented with the head placed in the same di- 

 rection as in the species last described. 



The Pleuronectes punctatus of Bloch, or, as it is here 

 called to preserve the appropriation, Bloch's Topknot, is 



