PLATE XC. 
particular species through all its gradations and varieties. With 
impressioii we shall endeavour to point out a few charadlers in 
"'hich our present species difFers specifically from either of those 
■already described. 
Our fish is of the section “oculisa latere sinistro^' or such as have 
*he eyes placed on the left side of the head. Thofe species of the Pleu- 
^Onectes genus that have the eyes on this side, amount to about twelve, 
exclusive of one or two varieties, which some authors think distinct. 
Of these, the only species that resembles it, even in a remote degree, 
P. Maximus, P. Rhombus, P. Argus, P. Punctatus, P. Mancus, 
Lunatus, and P. Japonicus ; and it agrees with neither of those, 
lu the general contour, one of the strongest characters in fishes, it 
approaches nearest to the two first mentioned, those being the 
i^toadest of the Flounder tribe : — fi'om P. Maximus, (Turbot) it 
‘iiffers, in having the surface perfectly smooth, and free from those 
tuberculations which are obvious in the smallest of that species. It 
approaches P. Rhombus, (the brill) more closely than the Turbot, 
’u having the skin free from all asperities, but it is broader than 
fish, being even more so than the Turbot; it also dlifers in 
i^aving the middle rays of the dorsal and anal fin longer than the rest, 
the lateral line being much more incurvated over the pectoral fin, 
^ttd having a number of the dusky spots on the superior surface of 
body, surrounded by a whitish ring. — ^Though, in this last par- 
*'cu!ar, it seems to agree rather with P. Argus, it difFers from 
*^tat fish altogether in the deeper rhombic figure of the body. — P. 
ttnetatus is somewhat broader, and is spotted, but does not still nc- 
^°rd with this. — P. Mancus is spotted on the under surface as well 
above, like our fish, but is of an oblong elliptic form, and is 
Covered with rather large scales, while in our fish, the scales arc 
