CHLAMYDOMYXA MONTANA. 145 
average length scarcely reaches 2 p. They never, on 
meeting, fuse one with another. 
The endoplasm of CU. montana is filled with minute 
pigmented corpuscles. It is these which give the 
body its yellow-brown colour. Diatoms and small 
alge are also often present in the general mass. 
Dr. Penard found cists of C. montana of two kinds— 
namely, temporary cists, and cists proper, in which the 
organism maintains a latent existence for longer or 
shorter periods. The temporary cists, about 2p in 
diameter, have a transparent membranous envelope, 
usually colourless, but occasionally light yellow, and 
with a double contour. They are generally ovoid. 
The true cists are spherical; two or three together are 
sometimes found occupying a common cellulose envelope. 
Whilst C. labyrinthuloides rarely abandons its envelope, 
C. montana, in its active life, is invariably: naked, 
and when encisted occasionally escapes from its cist 
(fig. 32), a mass of plasma issuing from an aperture— 
giving the organism the appearance of a testaceous 
rhizopod, with amoeboid movements, and emitting 
filamentous pseudopodia rather copiously. More fre- 
quently there is a fragmentation of the contents of the 
cist, and from 20 to 40 globular secondary cists, about 
18 w in diameter, are liberated, to develop ultimately 
into living individuals, identical with the parent, but 
extremely minute. 
‘Fie. 32.—C. montana. A young individual issuing from its cist; highly 
“ magnified. After Penard. 
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