PLATE VII. 



FIGS. 



1-3. Pelomyxa palustris Grreeff. (p. 74) Fig. 1. Ordinary 

 condition during active movement. Pond at Northen 

 Etchells, Cheshire, x about 100. Figs. 1 a-d. 

 Phases in development from amoebulas, as observed 

 by Greeff. Fig. 2. A young individual in resting 

 state, showing internal structure; after Greeff. x 

 about 60-70. Fig. 3. An unusual phase of resting 

 state, the plasma-body forming a sub-spherical mass 

 with a fringe of fine hyaline pseudopodia. x about 

 150. 



4-6. P. villosa Leidy. (p. 79) Fig. 4. Ordinary condition 

 during activity. Fig. 5. A somewhat larger indi- 

 vidual in the same condition. Fig. 6. A portion of 

 the latter after undergoing various changes. By 

 lateral extension of the body the posterior lobe 

 became obliterated and the villi were spread out 

 along the margin until the normal condition was 

 reverted to. All x 250. 



