90 



INDIAN PILOT-FISH. 



become so important to their economy, we find 

 most extraordinary forms occurring. As an organ 

 of defence, and furnished with strong armour, it is 



often a most formidable weapon, as we shall notice 

 in its proper place ; and in fishes whose defence is 

 not so requisite, we see it trifurcated, as in some 

 of the Cyprinidce, the well-known gold-fish, for 

 example. In the singularly formed sun-fishes, 

 shoAvn in 



