You-ee-up. og! 
and middle legs, and the backward prolongation of the 
stronger and less movable hind ones, which eminently adapts 
them to a backward manner of walking, are characters which 
so deeply impress, that we cannot fail to call up, when occa- 
sion demands, the possessor of so wonderful a mechanism. 
Now that you have become familiar with the odd creature 
in form and in mien, set him once more upon his proud realm 
of sand, and seat yourself on the bank close by to watch 
and enjoy his curious behavior. In a minute or two his 
YOU-EE-UP IN HIS DEN. 
As He Appears in Youth and Old Age. 
fears will have subsided, and he in control again of his accus- 
tomed indifference. See, he moves. Round and round he 
turns in the loose grey sand, burying himself deeper and 
deeper, and throwing the grains out from the hole he has 
made by his twistings, using his short, flat head for a shovel. 
The sand, as it is thrown over the side of the burrow, forms 
quite a margin, and when all is completed the Ant-lion sinks 
himself deep into the bottom of the trap he has digged, 
leaving only the tips of his mandibles in sight, which are 
extended and ready to seize any insect that is so luckless as 
to fall into their reach. 
