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tions should be noticed, or such examples may represent a 
form essentially distinct. Butif, on the other hand, at hun- 
dreds or thousands of miles distance, one and the same form 
turns up, presenting when fully developed the same details, 
there cannot, I imagine, be a reasonable doubt but that 
such may legitimately be regarded as a permanent form or 
“species,” if the term be allowed. 
With an apology for obtruding these preliminary remarks, 
somewhat at variance with the views of observers, for whose 
opinions I have the most lively respect, I proceed to offer an 
account of my new form. 
AMPHIZONELLA VESTITA (sp. nov.) (Pl. VI, figs. 1—6). 
In endeavouring to bring before other more distant stu- 
dents of the Rhizopoda the somewhat variable aspects 
presented by the fout ensemble of the new form I name as 
above, I shall follow the precedent of my previous communi- 
cation, giving first a running commentary on the details 
presented by an examination of a number of examples, the 
characteristics of which I have made an effort to seize on in 
the accompanying figures, and defer short diagnostic charac- 
ters to the conclusion. 
As on former occasions, it may, perhaps, be most conve- 
nient to begin the description of this form, as it were, from 
within outward. 
We have, then, a minute sarcode body of what may be 
said to be normally of a globular figure, not exceeding say 
,i, of an inch in diameter, but sometimes examples present- 
ing themselves not reaching more than two-thirds of that 
measurement. The basic substance of the body-mass might 
indeed be called by some colourless ; but, to my observation, 
it does not quite so appear, but sub-pellucid, and not quite 
uniform in tint, nor altogether homogeneous in consistence. 
The hue presented to my eyes is what I may call somewhat 
clouded, and varying from a very pale yellowish-brownish, 
in some places, to a very pale bluish in others, especially at 
the circumference, and but very slightly granular, while the 
pseudopodia, and the part whence they emanate, appear 
colourless, or pale bluish. 
In all the specimens I have seen (from three localities), 
just beneath the outer boundary of this sarcode-body there 
occurs a stratum of irregularly scattered, generally elliptic, 
or rounded, but sometimes irregularly figured, very minute, 
greyish, or somewhat purple coloured, sharply and darkly 
