142 BRITISH FRESHWATER RHIZOPODA. 
ment; 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 »; length when extended (ovoid) 100-150 »; inclu- 
sive of the pseudopodia 300 p or over. 
In a boggy pool at Chelford, Cheshire, associated 
with Cochliopodia, Hyalodiscus +ubicundus, 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. 
Chlamydomyea 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 0. 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 m Sphagnum. The latter discovered it near 
Geneva, in marshy ground, associated with a species 
of aquatic Hypuwm. In our only known English 
locality it was found in a pool, amongst some flocculent 
surface-vegetation which harboured a great variety of 
Desmidiz, as well as much rhizopodous life, including 
such species as Hyalodiscus rubicundus, Cochliopodinm 
bilimbosum, Diflugia corona, D. amphora, and various 
