250 NATURAL HISTORY SOCIETY OF DUBLIN. 
ristic reddish ones, when it is examined under a high power; nothing 
like a ‘‘nucleus’ has hitherto been seen. The pseudopodia are often 
very hard to be made out; they can be sometimes seen to vary some- 
what in thickness, and sometimes appear to be thicker above than at 
the origin, and they are straight and comparatively rigid. They do 
not ever seem to coalesce, nor do they seem much to exceed in length, 
at most, the diameter of the body; whence or how they emanate I could 
not make out, for when the body is focussed to the equator, they cannot 
be detected, probably because so pellucid. Covering the body in a more 
or less deep stratum are seen a number of colourless, hyaline, spherical, 
sharply defined (soap-bubble-like), vesicular structures. These vary a 
little in size, but are always very minute. They do not seem to pos- 
sess any nuclear or granular contents under even a 4th objective. 
Between the periphery of the central body and this stratum of vesicular 
structures there appears to be an exceedingly minute interval; that is, 
the lowest vesicles or those nearest the central body do not seem to be . 
in absolute contact with it, but separated therefrom all round by an 
appreciable equidistant space, which, in acertain position of the focus 
and of the light, appears like a clear white even line, between the 
periphery of the inner body and the outer stratum of vesicles. The 
vesicles themselves are in contact with each other, but do not seem to 
have any mutual connexion, though resembling what vegetable histo- 
logists might call a merenchymatous tissue. In fact, they are some- 
what easily detached by pressure, and can be made to float away in- 
dependently, so that the sarcode-stratum by which they are held toge- 
ther must be of great tenuity. 
In fig. 5 I have depicted the appearance of an example of this form 
after having been submitted to pressure, by force of which a portion of 
the body-mass became extruded, and some of the outer vesicles pro- 
jected to a distance. A number of the reddish granules are seen hard 
by, where they assumed a molecular dancing movement; and some of 
the vesicles are also seen removed, and freely distributed in the sur- 
rounding water. The outline of the central body presents a sinus at 
the place whence a portion of its mass had become extruded, and 
thereat the sarcode shows a hyaline appearance, due to the loss of the 
colouring granules. The figure of the specimen has been made at this 
point. Such an example however, in a few moments—the sinus gra- 
dually becoming obliterated—is ale to reassume the globular form, 
the only difference being that, at the region whence the reddish gra- 
nules have been expelled, the body remainsfor a time comparatively 
colourless, and the outer vesicles, now diminished in number, become 
rearranged pretty equidistantly over the periphery in a single file, or 
more or less interruptedly, instead of presenting a layer two or three or 
more deep, as in the usual examples. 
This does not appear to be a very ravenous species, but examples are 
to be met with containing a variety of crude food, such as protococcoids 
and minute diatoms. Sometimes specimens are seen containing, perhaps, 
