232 



MORPHOLOGY OF INVERTEBRATE TYPES 



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FIG. 46. Anatomy of Octopus after Leuckart's Wandtafeln. I, artery 

 of an arm; 2, nerve of an arm; 3, pharynx; 4, buccal ganglion; 5, cerebral 

 ganglion; 6, duct of upper salivary glands; 7, funnel; 8, posterior salivary 

 glands; 9, crop; 10, anus; n, gill artery; 12, opening of left nephridium; 

 13, gill vein; 14, gastric ganglion; 75, left auricle; 16, spiral ccecum of stom- 

 ach; 77, nephridial sac; iS, water canal; 19, ventricle; 20, ovary; 21, rectum; 

 22, hepatic ducts; 23, mantle; 24, stomach; 25, right gill; 26, opening of the 

 right oviduct; 27, stellar ganglion; 28, nerve to the gastric ganglion; 29, 

 posterior salivary glands; 30, aorta; jz, oesophagus; 32, optic ganglion; 

 33, anterior salivary gland. 



