MICROSCOPIC OBJECTS. 
The colours of the coat of these insects vary in different indivi¬ 
duals, as well as the colours of their ovaries, some being of a 
greenish-blue, and others red with green ovaries. 
Another variety of this, called by Muller the cyclops minutus, 
or little cyclops, and popularly the jumper, is shown in B, fig. 5, 
as drawn by Dr. Goring, the animalcule being in a bent position, 
one of its characteristic attitudes. The real length of this 
specimen was about the 250th of an inch. 
The structure of the coat, or cuirass, is similar to that of the 
animalcule represented in a, fig*. 2, but it has a greater number of 
segments and a more graceful outline. The single eye is encrusted 
in the shell. The antennae have not as many articulations as 
those of fig. 2, and the inferior pair of palpi is more plumed at 
the extremities. The most remarkable distinction between the 
two species is, that the latter is much smaller and supplied with 
only a single gill or respiratory organ under its beak. It has ten 
feet, and the female carries only a single bunch of eggs under the 
abdomen. In some individuals the respiratory organ observed by 
Mr. Pritchard has the form represented in b, fig, 6. 
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