316 Animal Biology 



Fig. 124. — Octopus or "devilfish" of the class Cephalopoda^ phylum Mollusca. 



-Foot 



o 



>Mouth— -( 



Kidney- - 

 Digestive gland 





qonad ' 



m 



.-Shew 



Fig. 125.— Tooth shell {Dentalium sp.) of the class Scaphopoda, phylum Mollusca. 

 At the right the shell is removed to show the internal organs. 



