PLATE XI. 
Figs. 
1-3, Vampyrella lateritia (Fresen.) Leidy. (p.96) Fig. 1. 
—An individual with pseudopodia fully extended. 
After West. x 520. Fig. 2—The same, after 
attacking a filament of Mougeotia. After West. 
x 520. Fig. 3.—Slug-like form. After Biitschli. 
x about 800. 
4-6. V. voraxy Cienk. (p. 102) Fig. 4.—A plasmodium 
formed by the union of two separate individuals, of 
which fig. 5 was one. Pond at Northen Etchells, 
Cheshire. x 500. Fig. 6.—An individual of un- 
usual form. After Penard. 
7-12. V. flabellata Cash. (p. 103) An individual as seen 
in various attitudes, during extended observation. 
Barking, Essex. x 500. 
13-15. V. gomphonematis Heck. (p. 105) Fig. 13—An 
individnal as ordinarily met with amongst floating 
vegetation. Pond, Cheshire. x 500. Fig. 14.— 
Another, enclosing a diatom from which it had ex- 
tracted the chlorophyl. Pond, Cheshire. x 500. 
Fig. 15.—An example as seen enveloping frustrules 
of a Gomphonema. From Biitschli, after Heckel. 
x about 350. 
