CHLAMYDOMYXA MOXTAXA. 



141 



ments, and probably as a result of them, numerous 

 vacuoles (non-contractile) appear in the substance of 

 the ectoplasm about the bases of the pseudopodia. 



During the activity of the animal there is a constant 

 movement of minute fusiform colourless bodies (similar 

 to, but smaller than those observed in C. labyrinthu- 

 loides), up and down the finely-attenuated threads, 

 the precise function of which (as in G. labyrinthuloides} 

 has not been satisfactorily determined. Prof. Lankester 



FIG. 29. Chlamydomyxa montana. An individual extended and active. 

 Chelford ; September, 1905. x about 400. 



was of opinion that they might consist of nuclear 

 substance, " the particles of a fragmented scattered 

 nucleus," but more recent researches by Dr. Penard 

 have resulted in the discovery of true nuclei (which are 

 numerous) in the pigmented substance of the endo- 

 plasm. They are spherical, very pale, and average 

 2'75 [L in diameter. Spherical cists are formed, several 

 of which may be enclosed in a common cellulose 

 envelope. A fragmentation of the plasma takes place, 

 and there is a formation of secondary cists ; these are 

 liberated in due time, and undergo separate develop- 



