PLATE XVI. 
Fias. 
1-9. Pseudochlamys patella Clap. & Lachm. (p.129) Fig. 1. 
—Ordinary discoid phase of an adult individual. 
Pond at Northen LEchells, Cheshire. x 500. 
Figs. 2-4.—Phases of a young individual with 
pliable test. x 500, Fig. 5.—Another in the same 
stage of growth, inert, the margins of the test over- 
lapping. x 500. Fig. 6.—An individual exhibiting 
a digitate pseudopod. x 500. Figs. 7-9.—Different 
aspects as figured by Claparéde and Lachmann. 
10-14. Centropyxis aculeata Stein. (p. 182) Fig. 10.—An 
empty test of the typical form. Fig. 11.—The same, 
viewed obliquely. Figs. 12 and 13.—Views of a 
living example, in different positions, and showing 
variation from the type. Fig. 14.—An encysted 
example. Dunham, Cheshire. All x 300. 
15. C. acwleata var. spinosa Cash. (p. 135) Dunhan, 
Cheshire. x 300. 
16. C. aculeata var. ecornis Leidy. (p.135) An empty 
test, showing ordinary spineless character. Pond, 
Baguley, Cheshire. x 800. 
