NERVOUS SYSTEM IN GONIONEMA MURBACHII. 



43 



ined both before and after removal of the genital glands, the cce- 

 lenteric canal or overlying gelatinous layer, show from the sub- 

 umbrella side, at the border of the radial canal, closely arranged 

 bi-and multipolar cells (Fig. 2, /, /) and focusing a little deeper a 

 band of fine parallel nerve fibers intermingled with ovoid nerve 

 cells that send off thicker fibers (Fig. 2, /, /). Focusing still 



M 



FIG. 2. Schematic view of a piece of the radial nerve tissue. The band at the 

 right (7v) represents the nerve cells below the ectodermal epithelium of the sub- 

 umbrella ; at the left (/) those between the muscles and the endodermal cells as seen 

 from the exumbrella side. 



J, multipolar cells, close to radial nerve fibers. 

 K, radial tissue cells. 



L, ovoid cells among the radial nerve fibers. 

 M, beaded fiber of subepithelial network. 



deeper, beyond the radial muscle fibers, somewhat smaller bi- 

 and multipolar cells come to view (Fig. 2, s, /). The latter 

 can best be seen from the exumbrella side. The first kind of 

 cells lie below the ectodermal epithelium of the subumbrella. 

 Some of their fibers extend laterally, seemingly to the muscles or 

 the subumbrella network of ganglia and fibers (Fig. 2,7'), others 



