144 BRITISH FRESHWATER RHIZOPODA. 
their distinctness ; and conversely that when a thread 
seems to divide into two, longitudinally, the case is 
really one of separation of two pre-existing threads.” 
His general conclusion was that the threads do not 
form a dendritic branching figure, or a network, but 
are merely apposed so as to form one less expanded, 
or, to speak more accurately, an apparent meshwork, 
and when more straightened and separated from one 
another, an apparent tree-like structure, the appear- 
ance in both cases being illusive. 
Dr. Penard, however, having given close attention 
to the filaments and their behaviour, is of opinion 
that a real fusion is effected. The power of each 
filament to bifurcate he also placed beyond question. 
With regard to the fusiform hyaline corpuscles 
which travel along the threads, Dr. Lankester says: 
“The movement of the oat-shaped corpuscles is the 
most interesting and characteristic feature presented 
by Chlamydomyra. It must be distinguished altogether 
from the straightening and expanding movement of 
the mass of filaments; at the same time, it is not 
manifested until the filaments have become—some at 
least of them—straightened and free. Then as such a 
filament spreads itself, and as it were slowly pushes 
itself forth in a straight line, first one, then another, 
and finally many of the oat-shaped corpuscles are seen 
to advance along it. They move slowly in one direc- 
tion as a rule, stopping sometimes after a considerable 
advance, and then resuming movement. They do not 
all travel at the same rate on one filament. I saw on 
several, one corpuscle overtake another and glide over 
the back (so to speak) of its more slowly-moving com- 
panion, and advance in front of it.” He was of opinion 
that the movement was produced by an exceedingly 
delicate coat of hyaline protoplasm. 
These minute bodies differ from those of C. labyrinth- 
uloules in_being considerably smaller, and generally 
ovoid. They are colourless, and Penard says resist 
the action of carmine and other reagents. Their 
