CASSIOPEA XAMACHANA. 



201 



TABLE 1. DIMENSIONS OF SPECIMENS FROM BOTH SALT POND AND PORT ROYAL 



(VARIETIES A AND B.) 



TABLE 2. AVERAGE DIMENSIONS OF THE THREE VARIETIES, GIVEN IN THOUSANDTHS 

 OF THE AVERAGE DIAMETER OF THE UMBRELLA. 



Locality. — Great Salt Pond, and mangrove swamps (" The Lakes") in the rear of 

 Port Royal, Jamaica. — Bigelow. 



(?) Moat outside Fort Jefferson on Garden Key, Tortngas Islands, and Mangrove 

 Keys, near Key West, Florida. — Fewkes. 



