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genera of Rhizopoda, their existence in the present form 
seems to be rather exceptional than otherwise. 
Such a specimen as that repeated in my fig. 2, offers how- 
ever an example of this condition in a pronounced degree. 
Here the whole body-mass is more or less areolated by the 
presence of vacuoles, and the green and colourless granules 
are pushed aside, and these run more or less into a reticu- 
lately disposed arrangement between the vacuoles, the elliptic 
bodies naturally falling into a position more or less end to 
end. But not only do those internal vacuoles exist, but no 
less than three marginal ones appear in the example figured, 
showing a distinct pulsation in action, very much like that 
of the marginal pulsating vacuoles in Actinophrys, Actino- 
spherium, Heterophrys (H. Fockii, mihi) and cthers. 
But, perhaps, the most interesting circumstance connected 
with these pulsating vacuoles is the way they stretch and 
seem to attenuate the outer coat, as seen in two of those 
present in the example figured (Fig. 2). I have not been 
able to see that they caused an opening in the coat; at all 
events, on collapsing, the latter had quite its ordinary 
appearance. From the appearance here presented we see 
something like what I imagine ought to reveal itself before 
an advancing pseudopodium, did not it actually penetrate 
through and project beyond the outer coat, as I have already 
conveyed. ‘The third marginal vacuole in the rather ener- 
getic example figured occurs on the broad projection giving 
off the pseudopodia, and seemingly here without the covering 
of the outer coat. Unlike the marginal vacuoles of the 
Actinophryans, these were slow in action, pulsating only a 
few times and disappearing, nor recurring after a long time 
of waiting, until finally the dip dried up. 
But our form occasionally, indeed rarely, presents yet 
another characteristic: this I tried to repeat in Fig. 3. This 
consists in the somewhat sudden appearance of a fitfully 
more or less deep halo of very pellucid sarcode matter, out- 
side the whole body-mass and outer coat—sometimes inyoly- 
ing the example completely round, at other times seemingly 
developed over only a portion of the superficies. So far as 
my observation reaches of the occurrence of this curious- 
looking envelope, it has presented itself only in the examples 
from the third locality (county Tipperary), and in those 
without chlorophyll-granules, and in which, too, the hair- 
like appendages were least developed, or, as in the example 
figured, all but obsolete. Whether, however, there is more 
than meets the eye in the circumstances just mentioned, I 
must leave in abeyance. But to describe the appearance 
