254 NATURAL HISTORY SOCIETY OF DUBLIN. 
This, then, is an undoubted Rhizopod. It possesses a minute, 
nearly orbicular or very broadly elliptic, quite hyaline, colourless, and 
smooth test, which encloses a sarcode body mass of a bluish kind of 
tint and densely granular appearance, resembling that seen in the so- 
called nucleus of Amoeba and others. ‘This, in the greater number of 
cases, when the examples are fresh, does not come into contact with 
the inner surface of the test, from which it mostly seems to stand off 
some appreciable distance, partially or all round, though occasionally 
closely invested by it. At one point of the test, sometimes indicated 
by a gentle elevation in its figure, is given forth an emanation of the 
sarcode, hyaline in appearance as compared with the central body 
mass, and from this proceed, in variously extending ramifications, the 
sometimes very long pseudopodia. These pseudopodia branch conside- 
rably, and inosculate at different points, not only with those of the 
same example, but frequently also, as has been mentioned, with those 
of neighbouring individuals (fig. 7). 
The pseudopodia sometimes assume even fantastically drawn out, 
remotely extending, ramifications (figs. 7, 8); they sometimes proceed, 
though this far less commonly, as a vertical slender stem, and then 
branch off in a dendroid manner at the top (fig. 9); they often, how- 
ever, emanate simply as a tuft or shrub-like cluster (fig. 11), and a few 
often singly, or in minor groups, are directed backwards. The pseu- 
dopodia themselves are hyaline, but carry a considerable number of 
minute, but variously sized opaque granules. Along their length, or 
at the points of fusion, or where branches are given off, there often 
occur little variously shaped expansions or dilatations, in which a few 
of the moving granules seem to tind a temporary repose. At first sight 
the whole looks dead and motionless; but a short observation shows 
the current of these granules along the course of the pseudopodia very 
perceptibly. In very many of the specimens comparatively large aggre- 
gations of granules, considerably larger than the average, presented 
themselves; and the movement of these clusters was more rapid than 
that of the individual more minute granules. Thus, the cluster or 
little aggregation of the group of three herewith (fig. 7) took about a 
minute to travel from a position as near the upper individual as that 
now shown occupied by it as regards the lowest. Not only is there 
this slow and rather fitful ‘‘ cyclosis’’ of the granular contents of the 
pseudopodia; but a more prolonged examination soon shows that there 
is a constant but gradual change of position, of degree of ramification, 
and of reticulated arrangement of the pseudopodia themselves. 
Sometimes a club-shaped or dilated expansion of a pseudopodium, 
not inosculated with any other, exists in certain examples; and, within 
such, a cluster of coarser granules, similar to those seen in the inter- 
mediate dilatations of the mutually incorporated pseudopodia of diffe- 
rent individuals, is usually presented (fig. 10). 
These larger, shapeless, and irregular granules may possibly re- 
present food becoming digested ; for it is not readily to be seen how such 
