AMOEBINA 439 



tula; body more rounded; locomotion by eruption of cytoplasm 

 through the body surface; 45-55/z by 35/x; nucleus vesicular; fresh 

 water among vegetation. 



Fig. 185. a, Amoeba spumosa, X400 (Penard); b, c, A. vespertilio, 

 X300 (Penard); d-f, A. gorgonia, X400 (Penard); g, A. radiosa, X500 

 (Penard); h, Dinamoeba mirabilis, X250 (Leidy). 



A. spumosa Gruber (Fig. 2, c, d; 185, a). Somewhat fan-shaped; 

 flattened; during locomotion broad pseudopodia with pointed end; 

 temporary posterior region with nipple-like projections; a small 



