jgQ " DISCOPHOR^. ^ Paht III. 



distribution of the Cyanese and Aureliao of the American coast, and it is highly 

 desirable that a closer comparison should now be instituted between the species of 

 the Mediterranean and of the Celtic Faunas, between which similar differences seem 

 to obtain as between the Faunae of the Atlantic coast of North America. It can 

 hardly be expected that similar facts should soon be brought to light for the whole 

 extent of the two great oceans. 



