CHILOMONAS PARAMCECIUM EHRENBERG. 



215 



2 



6 



FIGS, i AND 5. Specimens with closely packed paramylum grains and few 

 chromatic bodies. X 1,500. 



FIG. 2. Shows ventral flagellum, pharynx with rows of structures within its 

 wall the rudimentary trichocysts. Nucleus is here closely applied to the fundus 

 of the pharynx. Paramylum grains reduced somewhat and the number of chro- 

 matic bodies is increased. X 1,500. 



FIGS. 3, 4 AND 6. Show the paramylum grains greatly reduced in size and 

 the chromatic bodies greatly increased in size. In these cases the size of both 

 paramylum grains and chromatic bodies varies much. X 1,500. 



spherical space, which may or may not be bounded by a nuclear 

 membrane. Examples of the first type were described by 

 Gruber in certain Rhizopods and in a number of Ciliata, and, 



