CHLAMYDOMYXA MONTANA. 145 



average length scarcely reaches 2 /A. They never, on 

 meeting, fuse one with another. 



The endoplasm of C. montana is filled with minute 

 pigmented corpuscles. It is these which give the 

 body its yellow-brown colour. Diatoms and small 

 algaB are also often present in the general mass. 



Dr. Penard found cists of G. 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 2 /u, 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 occupyinga common cellulose envelope. 

 Whilst G. labyrinthuloides rarely abandons its envelope, 

 G. 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 /A in diameter, are liberated, to develop ultimately 

 into living individuals, identical with the parent, but 

 extremely minute. 



FIG. 32. C. montana. A young individual issuing from its cist ; highly 

 magnified. After Penard. 



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