MOLLUSCA 



(Shells) 



Class CEPHALOPODA. 

 Order DIBKANCHIATA. 



Fam Argonautidae, 

 Argonauta Argo. Paper Nautilus. China. 

 Fam, TeuthidaB. 



Loligo vulgaris. Pen of, Britain. 



Fam. Sepiadae. 



Sepia orbignyana. Internal Shell of, Mediterranean. 



Fam. Spirulidae. 



Spirula lams. Internal shell of, New Zealand. 

 Order TETEABKANCHIATA. 



Fam. Nautilidae. 



Nautilus pompilius. Indian Ocean. 



