PLATE XIII. 
Fias. 
1. Nuclearia conspicwa West. (p.112) An individual with 
pseudopodia extended. After West. x 400. 
2-6. Hyalodiscus rubicundus Hertw. & Less. (p. 106) Figs. 
2 and 8.—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. 
