PLATE XIII. 



FIGS. 



1. Nuclear ia conspicua West. (p. 112) An individual with 



pseudopodia extended. After West, x 400. 

 2-6. Hyalodiscus rubicundus Hertw. & Less. (p. 106) Figs. 

 2 and 3. Views of single individual. Pond at 

 Northen Etchells, Cheshire. x 500. Fig. 4. 

 Anterior margin. After Penard. Figs. 5 and 6. 

 Resting and active states. After Penard. 

 7. Form of H. rubicundus named Plakopus ruber by F. E. 



Schulze. After Schulze (reduced), x about 400. 

 8-11. Phases assumed by an individual probably identical 

 with the above form. Epping Forest, x 500. 



