FIDDLER CRABS t)3 



A fish hawk was seen to catch a large fish, and, after 

 rising 50 feet in air, utter two squealing notes and 

 drop it back into the sea. I looked around, expecting 

 to see a bald eagle, and hear the rush of its wings, 

 but nothing was in sight. Possibly the fish saved its 

 life by being too great a burden for the bird to carry. 

 Those curious little crustaceans, the fiddler -crabs, 

 Uca pugilator Bosc., are very abundant near the in- 

 let, as they are also along the river banks at Ormond. 

 They are easily recognized by the extraordinary de- 

 velopment of one of the claws or chelae of the males. 

 This large claw is used in fighting, which accounts for 



Fig. 17-Fiddler Crab. 



its size and strength. In the same way a man's right 

 arm is larger than the left on account of its more ac- 

 tive use. The females have little cause for fighting, 

 and both claws are, therefore, small. The large arm 



