168 



THE NAUTILUS. 



the ordinary cephalopods has been given ; but there 

 are three genera belonging to this group, — we allude 

 to the nautilus, {Nantihis pompilius,) the spirula, and 



The Nautilus. 



the argonaut, (^Argonauta argoa,) of which the living 

 animals are the tenants of a shelly domicile. 



The reader has probably been much pleased with 



