302 



OTT. 



[Vol. VII. 



EXPLANATION OF FIGURES. 



A.G. 

 B. 



Ba. 



C. 

 CD. 



Ce. 



CM. 



Co. 



CP. 



D.O. 



Ds. 



E. 

 E'. 



F. 

 Fi. 



G. 



I. 

 In. 

 K. 



L. 



L.M. 



L.N. 



M. 



Mu. 



brain ganglion of the anterior 



bud of a chain, 

 brain. 



basal membrane, 

 cuticle, 

 cone-shaped depression of the 



integument leading to the 



mouth, 

 amoeboid cells in the paren- 



chyme. 

 circular muscle fibres, 

 brain commissure, 

 ciliated pits, 

 dish-shaped organs, 

 dorsal limb of the water vascu- 

 lar tube, 

 epithelial cells, 

 stained bodies in the vacuoles 



of the intestinal cells, 

 cilia. 



nerve fibres, 

 ganglia of brain, 

 integument, 

 intestine. 



karyokinetic figure, 

 lateral branches of the water 



vascular tube, 

 longitudinal muscle fibres, 

 lateral nerves, 

 mouth, 

 muscle layer. 



