lest 



. c,si. Nautilus pompilius, dissection <>f the internal organs of a male, from the left side. The 

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

 buecal cavity has been removed to show the odont<>i>hore and the tongue, ace. <jl. vesicula seminalis; 

 an. anus ; aort. oral aorta ; nori'. posterior pallial artery ; h. ilu. bile-ducts ; buc. n. buecal nerves ; buc. 

 '/"'/>. papilla of peristomial membrane; rer. <i. cerebral ganglion ; ro'c. caecum ; c.r. crop; hd. hood; inf. 

 funnel ; inf. n . infundibular nerve ; int. 1 part of intestine between stomach and cjwcum ; int.'~ part of 

 intestine following ca-ciini ; jitf, larger (posterior) jaw ; 1. iff. In-, r. left efferent branchial vessels ; t. tent, 

 ini. left internal tentacular lobe ; ntc<l. *. Needham's sau ; oi/on/. odontophorc ; :'. style passed from buecal 

 cavity into the opening of the oesophagus ; <*. iuso]hagus : <>lf. n. olfactory nerve ; opt. n, optic nerve; 

 oto. statocyst ; /xill. n. pallial nerves ; r jml. ;/. pedal ganglion ; ^(. <i. plcural ganglion ; r. cff. br. r. right 

 efferent branchial vessel ; rctr. retractor muscle of the buecal mass ; /. lie. right lobe of " liver" ; s/om. 

 stomach ; /<./<(. testis ; inn<i. tongue-shaped elevation of the tloor of the mouth ; ca. valve of funnel ; 

 ceo,, c. vena cava ; cent, ventricle. 



