FIG. 127. Anatomy of Octopus (after Leuckart and Milne Edwards). The body is cut open posteriorly, the mantle laid 

 >ack to the right and left, and the liver removed. 1, Brachial artery ; 2, brachial nerve ; 3, pharynx ; 4, buccal ; 5, cerebral 

 anglion ; 6, efferent duct of the upper salivary glands ; 7, funnel ; 8, upper salivary glands ; 0, crop ; 10, anus ; 11, afferent 

 n-anchial vessel (branchial artery) ; 12, left renal aperture ; 13, efferent branchial vessel (branchial vein) ; 14, gastric ganglion ; 

 c>, left auricle; 16, spiral c*cum of the stomach; 17, renal sac; 18, water canal; 19, ventricle; 20, ovary; 21, rectum; 22. 

 fferenfr ducts of the digestive gland (liver), cut through near its opening into the intestine ; 23, mantle ; 24, stomach ; 25, 

 ight ctenidiurn ; 26, aperture of the right oviduct ; 27, stellate ganglion ; 28, nerve to the gastric ganglion ; 29, upper salivary 

 land ; 30, aorta ; 31, oesophagus ; 32, optic ganglion ; 33, lower salivary glands. 



