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BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 



The following table will serve to show the wide geographical range of 

 some species of Medusae found at the Tortugas, Florida. (0) indicates 

 absence; (1) indicates that the species is identical with that found at 

 the Tortugas. For example, (1) found in the column headed "Canary- 

 Islands " shows that the Canary species is identical witli that found at 

 the Tortugas. (1 ± ) indicates the presence of a form that may prove to 

 be identical with the Tortugas species. (A) indicates the presence of a 

 closely allied but nevertheless distinct species from that found at the 

 Tortugcas. 



