Epi d.of praeovallobe 



' fl * a ^ tf r ^ »-- 4 " p « -* .r« ! ■',? t- 







~ant Cdh .--~^\X-S 



Fitf 25 



Studies. Ml. Vol. V.Pl.X. 



Nerve iopracorallobe 



•*■»■' "rA ■'*'*> "^it'"*\ 



.'"^'i . 





. f/ 



Gianl Ctlh 



?ie:26 



Gianl Cells 



Blood sinus 



Fig: 27, 



Anus 



Zona radlala 



Sense pits 



Mouth ■ 



\M Nucleus 



Anus 



FiaSO 



Openi7-tg a! Nephndia 



LitK.lImp. Camb. 5ci iTist Co. 



