Hectjocotylhed arm^ 



Jcjcker 



Cartilage 



Siphon 



Anus 



Niucle 



Esophaau5 H 



Rectutn 



Ink5ac 



Ant. aorta 



Systemic hearts 

 Pen. 



Penis 



'CI Left g/ll 



U\ Branchial heart 



p£S^ Lt. post cava 



t& c \ ^■ 

 ^j^A: Spermabopnoric sac 



?1\ Stomach 



Pen 



iL-iiZi, Liver 



.stomach- 

 poach 



.Cut edge of 

 body wall 



Fin 



Fig. 123. — The squid {Loligo sp.) of the class Cephalopoda, phylum Mollusca. 

 Dissected to show internal anatomy. (From Potter: Textbook of Zoology, The 

 C. V. Mosby Go.) 



