658 NATURAL HISTORY MISCELLANY. 
on animal and vegetable life; their bodies are annulose, or com- 
posed of rings having hair-like processes on each segment, which 
enables them to move about with considerable quickness; their 
Fie. 117. mouth is capacious and ciliated; the in- 
testinal canal is plainly seen, and their 
food can be well observed through their 
transparent bodies. We have seen them 
devour rotifers, monads, bell animalcules 
and other animals; in fact they refuse 
nothing. They are produced from eggs. 
That slipper-shaped species is very 
common, and found in great numbers; it 
can be seen by the unassisted eye as.a 
tiny speck coursing across the animalcule 
cage. It is called the Chrysalis animal- 
cule (Paramecium aurelia.) It is ciliated 
all round the sides of its body, and moves 
about very swiftly; it is like a porpoise 
in a shoal of herrings— dashing here and 
there, devouring the smaller species, such 
as monads, in all directions. It under- 
goes many changes, and assumes many 
shapes during its metamorphosis; it is 
produced by fission as well as from the 
egg. (Fig. 117 represents Paramecium 
caudatum Ehr.) 
That restless little fellow with four horns 
Cyclops quadricornis (Fig. 118). The 
only way to get a good look at him is to 
bring a little pressure to bear by giving 
the cover of the live-box a slight squeeze 
so as to keep him still. He is very active, 
and measures about the sixteenth part of 
an inch in length. His head is furnished 
with four antenne or horns, and the creature is provided with five 
pairs of feet and a long tail, which is terminated by bristles. It 
has in the centre of its forehead, a single red eye—hence the name 
Cyclops, after Vulean’s workman. The legs of the Cyclops at 
each of the joints, are furnished with hairs. evidently to help the 
creature in swimming, as is also the case with aquatic beetles. 
The female carries two ovaries at the extremity of the abdomen, 
Paramecium caudatum. 
