ientacles ofbiujL 



€Uwte/ii(xry cayiaJy 



Fi^.16. 



^y-^ 



orowro 

 brown, body 



teTvtacles 



Fvq.23. 



pharynx 

 brown, body 



em,irfc' 



Fi^. ZO. 



pharyn 



Fiq. ZZ > , / 



otsopfioffus 



pharyn 



ph^J-^ /i.^ 



^ caecum. 



sperrrusccoxoon. 



] \ ' f i-pkowyn 



■cccecizm^ 



)M% . 





ejniryo 



Fi0. 26. 



Ficf. 25. 



suspe 



tmiryo 



orownbody 



Fig. 2 J. 



cmdryo. 



S F Harmer del 



F Huft.Llth' Ed;!i' 



