FLAT WORMS 



35 



Fip. 8. Nervous System of rhabdocoelida. A and B. Brain with one and 

 two pairs of eyes of alloeocoelan flat worms. Bohmintj. C. Nervous 

 system of an acoelan, Pulyrhovnis, Lohner. I) to H. Brains of Rhab- 

 docoela. D. ())>i!it(i}}i(t. E. ProrhnxcliKK, after Vejdnvslsy. F. Oaffilla, 

 Bohminp. G. Rhubdocoela nervous system. Biihming-. H. Steiiostoma, 

 Ott. I. An acoelan .showing nervous system after Bohming. 



