Studies.M L^Vol.V.Pl.VI 



Imvovert 



cr^lom 



sperm marirla 

 Bl. Corp. 



1 ower lij> 



_. Brain 



Bl. ves. 



.Cunde 



•Id. Spa::e T^^ 



"Pjtf [0 Circ. muscles 



7,0. 



Space of 

 oraeorallohe 



Cuticls 



Pig'. 12. 



Papilla 



Circ muscles 



Papilla 



Ccelora 



Circ muse 



.^. Long. muse 



uticle 



tpidermts 



Fie? 13. 







LitK.&.Imp, Camb. Sci. Inst.Co. 



