DIHKAXCHIATA Oil TWO-WILLED C'El'HALOPODS. 397 



include the Argonaut, Octopus, Cuttle-fishes, Spirilla, 

 Squids, etc. 



The skin of the naked cephalopoda contains variously 



FIG. 533. 



Argonaut or Paper-Sailor, Argnnauta argo, Linn. Much reduced. 



Warm Seas. 

 FIG. 534. FIG. 535. 



Spirula Icuvis, Gray. 

 Keduced one half. Octopus or Poulpe, Octopus tuherculalus, Blainville. Much 

 New Zealand. reduced. Mediterranean. 



FIG. 536. 



Squid or Lollgo, Lnligo Bartramii, Le Seueur. Much -reduced. 

 Atlantic Coast of United States. 



