SECTION VIII. 169 



PI. II. fig, 16. the Indian pearly Nautilus. 

 Fig. 17. the fan)e Shell laid open, to fhew 

 its cells or chambers, and its fiphunculus 

 pr pipe of communication. 



The Paper Nautilus, though clafled by 

 moft authors as a Nautilus, is of a diftincb 

 genus: it not being of a chambered ftruc- 

 ture. 



The fpecies of Nautili are few. Au- 

 thors make two forts of the Eaft Indian 

 or pearly kind, to wit, the umbllicated 

 and non-U nibilicated ; which I aflent to. 



This pearly Nautilus is by fevcral au- 

 thors very erroneoufly called Nautilus Grse- 

 corum : whereas the Nautilus of the 

 Greeks was the Paper Nautilus, not this 

 kind. 



The animal oftliis Shell is faid to inha- 

 bit only the uppermoll or open chamber, 

 which is greatly larger than the others. 

 The reft remain empty, except that the 

 pipe, or fiphunculus, which communicates 



froa^. 



