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:. ObL— Nautilus pompilius, dissection of the internal organs of a male, from the left aide. The 

 funnel and the hood have been divided by a longitudinal median section. A portion of the wall of the 

 buccal cavity has been removed to show the odontophore and the tongue, ace. gl, vesicula serainalis ; 

 an. anus ; aort. oral aorta ; o.ort'. posterior pallial artery ; b. du, bile-ducts ; 6«c. n. buccal nerves ; hue. 

 pap. papillae of peristomial membrane ; cer. {/. cerebral g:anglion ; ccec. cascuni ; cr. crop ; hd. hood ; id/. 

 funnel ; inf. n. infundibular nerve ; int.'^ part uf intestine between stomach and cyecuin ; i,ii.^ part of 

 intcfatine following cMscum ; jaio, larger (posterior) jaw ; I. cff. Or. o. left efferent bi'anclnal vessels ; I. tenl. 

 ■int. left internal tentacular lobe ; need. s. Necdham's sac ; odont, odontophore ; oi'. style passed from bucciil 

 cavity into the opening of the 03Sophagus ; "s. ojsophagus ; oif, n. olfactory nerve ; opt. n. optic nerve; 

 oto. statocyst ; pall. n. pallial nerves ; pcd. g. pedal ganglion ; pi. <j. pleural ganglion ; r. eff. Or. v. right 

 efferent branchial vessel ; retr. retractor muscle of the buccal mass; ,: liv. right lobe of " liver "; stoui. 

 stomach ; test, testis ; tonff. tongue-shaped elevation of the floor of the mouth ; va. valve of funnel ; 

 veil. c. vena cava ; veitt. ventricle. 



