CHLAMYDOMYKA LABYRINTHULOIDES, 109 
under the microscope. This is due to a number of granules 
of varying magnitude, often rather large, but mostly very 
minute, with a dark outline and of a bright red colour 
(Pl. VI; also Pl. VII, fig. 2, to the right; fig. 4). These 
may be often present in some examples in great abundance, 
sometimes in others more sparse, sometimes very few, or 
they may be in some specimens all but absent. 
Of the granular or solid contents besides the red granules 
others of a yellowish-green colour will attract attention. 
These are usually more minute than the larger of the red 
granules, but ordinarily surpass them in quantity, the red 
ones only rendering themselves more conspicuous at first and 
in the mass by their brighter and therefore more striking 
colour. ‘The fewer the red granules the more abundant the 
green, and vice versd. These green granules resemble much 
the chlorophyll-granules of certain alge, though never of a 
grass-green, but of a yellowish hue. I suppose it must be 
very probable that the red granules are in reality produced by 
change of colour of the green (Pl. VI; Pl. VII, fig. 2, to 
the left; fig. 4). 
But in the formation of the “ contents ” yet another granu- 
lar constituent has a part. Besides the above-mentioned red 
and yellowish-green granules, minute homogeneous lookin 
rounded little granules occur, of a pale bluish tint (Pl. VI). 
When wholly encysted, and now in a completely dormant 
and quiescent condition, the organism appears very densely 
filled, and hence the larger examples are quite opaque. 
The first and second year of my noticing this organism in 
examples from the Co. Westmeath pool, quite frequently— 
since then from that site, as well as Connemara, very rarely 
—did I succeed in obtaining a view of the condition now to 
be described. It was therefore well to have secured the 
accompanying drawing, when the examples were readily 
found in suitable order. 
Notwithstanding the seemingly tough consistence of the 
wall, or envelope, in manipulation, the contents have the 
power to burst or force their way outwards through it, and 
the basic plasma pours itself forth, bearing with it the granu- 
lar contents as described, but not any of these escape or be- 
come scattered, for they are held together by the common 
medium, but, on the contrary, they pass onwards with it and 
soon a remarkable sight presents itself. The plasma, thus 
become extended and spread out over a space so much greater 
than when it occupied the cavity of the envelope, now shows 
the contained granules mutually much further apdrt, render- 
ing the hyaline connecting basic medium in itself more 
