344 _ J. W. Bailey on a new Animatcule. 
out any true integument, and is colored yellow by tincture of 
iodine. It appears to resist internal pressure with considerable 
force, and it is but rarely that it appears to be completely broken 
through by any of the matters, however hard, which are con- 
tained within it. I have however found some individuals, as 
represented in fig. 32, which had voluntarily impaled themselves 
upon long fibres which were distinctly seen projecting through 
the animalcules at each end, and these animals were seen mov 
freely along from one end of the fibre to the other without ap- 
pearing to experience any inconvenience from the perforation. 
I have occasionally found them attached in this se to filaments 
of Conferva and Draparnaldia, which were still alive at one ex- 
tremity. The traces of internal structure or organization are 
exceedingly slight. Occasionally, when a portion ‘of the body is 
vacant, some slender thread-like lines may be seen in the 
interior, as shown at a in fig. 40. 
ee —— a 
CaS 
Sa i 
a, 
ne |) <—S> 
| In many individuals, (see fig. 33,) I have seen the peer? 
| the mouth of transparent rounded masses, which rapi : 
each other until they were heaped up about the mou 7 
like ‘@ set of soap bubbles and were then as rapidly drawn a 
again. The more common appearance however is that show 
belonging’ w ihe marine Foraminifera or  Plytlai os 
