142 BRITISH FRESHWATER RHIZOPODA. 



merit ; and each, exhibits in its own substance the 

 elements characteristic of the parent, with true nuclei. 

 The primary cist does not always proceed to fragmen- 

 tation ; the enclosed protoplasm may burst its envelope 

 and resume active life (Penard). 



Dimensions : Diameter of body (initial state) about 

 50 /A; length when extended (ovoid) 100-150 /a; inclu- 

 sive of the pseudopodia 300 p or over. 



In a boggy pool at Chelford, Cheshire, associated 

 with Cochliopodia, Hi/alodiscus rubicundus, and other 

 Rhizopoda, amongst floating vegetation, Sept., 1905. 



Our practical acquaintance with this species is con- 

 fined to two or three individuals met with whilst the 

 preceding pages were passing through the press. 

 With such inadequate material there was no opportunity 

 for careful study, but this is the less to be regretted 

 as the descriptions given by Ray Lankester and 

 Penard are so exhaustive. For the particulars here 

 given we are largely indebted to these authors. 



Chlamydomyxa montana first became known through 

 the investigations of Professor Lankester. Repeated 

 search for C. labyrinthuloides was fruitless, but in 

 August, 1886, he succeeded in finding on Sphagnum in 

 ditches, cut in a bog which occupies a clearing in the 

 pine-wood at Pontresina, the form afterwards described 

 under the name of G. montana. It was met with by 

 him on two subsequent visits to Switzerland. In each 

 case the Sphagnum was old and in a state of incipient 

 decay. It is to be noted that neither in our own 

 experience, nor in that of Dr. Penard, was the animal 

 met with in Sphagnum. The latter discovered it near 

 Geneva, in marshy ground, associated with a species 

 of aquatic Hypnum. In our only known English 

 locality it was found in a pool, amongst some flocculent 

 surface-vegetation which harboured a great variety of 

 Desmidise, as well as much rhizopodous life, including 

 such species as Hyalodiscus rnbicundus, Cochliopodium 

 bilimbomm, Difflugia corona, D. amphora, and various 



