Plate 87 

 Pisaster giganleus, Monterey Kay. Calif. 



FiGi re 1. Six-rayed example of the slender-spined forma from shallow water offshore, > i. 



2. Forma with heavier spines, although not an extreme example, X 4 ',. This is a well-fed 



specimen from the piles of a wharf whence it had crawled from shallow water. 



3. Actinal surface, base of ray, XI. 

 342 



