4U WITH HARD CHEEKS. 



resemblance which suggested to him the trivial name of pint 

 for this species.* The lateral line bifurcates at the caudal 

 end. The colour of the body of this fish when quite fresh is 

 a beautiful bright red, the sides and belly silvery white ; the 

 first ray of the first dorsal fin slightly crenated ; the colour of 

 the fins reddish white, becoming paler the second or third day 

 after the fish has been caught. 



As the Gurnards are remarkable for the various forms of 

 the swimming-bladders in the different species, outlines of 

 some of these forms are added below, and an account of the 

 structure, functions, and peculiarities of this singular and 

 anomalous organ is here annexed. 



Rondeletius was the first to notice that the swimming or 

 air-bladder was more constantly found in fresh-water fishes 

 than in those of the sea ; and Needham and Redi soon after 

 pointed out the diversity of form in the swimming-bladder 

 that prevailed in different species. Redi afterwards described 

 the duct or tube by which this air-vessel communicates with 

 the alimentary canal, and valuable additions to our knowledge 

 on this subject have been since made by Monro, Lacepede, 

 St. Hilaire, and Cuvier. 



The swimming-bladder, as before stated, varies consider- 

 ably in form in different species. In the Sapphirine Gurnard 

 it is composed of three lobes, placed side by side, as shown 



* Montagu called this species lineata, for the same reason. 



