m-ostomunn , ,^ , 



' niu/uc/ari/an 



cpiel^,7,i/s oesoi 



'P/iagus 



haul awt/if 



Frg.2. 



prvsloinivTji slomatoqa.-itrrr nerve 



ampul/a 



■ilUtrpnil 



cesophagus 



proityuior muscles 



lip 



vmacuhw pfutrijnqeul j 



j-X:x 



iieiilral ne/ve rorU 



coelofnif fpiUieUunv 



({r/firf Jijinii . of Mirro.-ic Sci/w/rf X.SVol .'I'U'l .27. 

 FUj.S. 



luphriduifn 



luxit^ - mall 



exlei-mtl 



poiv 



/nifiipodumL 



V: 



Ospennathecal 



/§? ■. epUlermal 

 ^ ,.' iflcmds 



external pore- 



