Fig, 



Stalked Barnacles . 



moved from the hull, a basal, limy plate is gen- 

 erally left behind. 



The other type of Barnacle is the Stalked or 

 Gooseneck Barnacle (fig. 3). \Vhereas Acorn Bar- 

 nacles are attached to the hull by the calcareous 

 plates -which form the cone-shaped shell, Stalked 

 Barnacles have a muscular stalk which suspends 

 the body from the hull. The body proper of both 

 types is always protected by limy plates. 



13 



