PELOMYXA PALUSTRIS. 75 
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? Ameeba princeps Czzrny in Arch. f. mikr, Anat. V (1869), 
p. 159.* 
? Ameeba proteus Braytuy in Sci. Goss. 1886, p. 19.* 
Body of large size, presenting during active move- 
ment a rounded, oval, or elongated figure, often broadly 
lobed and irregular. Adult individuals opaque, from 
the presence in the colourless endoplasm of an extra- 
ordinary quantity of incepted matter, consisting of 
mud, sand-particles, and decayed vegetable débris ; 
bounded externally by a thin layer of finely-granular 
or hyaline ectoplasm. With the other contents, there 
may often be observed various organisms which 
have been taken as food (enclosed in large vacuoles) 
* Described as abnormally large forms of the species to which they were 
referred. 
