LETTERS ON ENTOMOLOGY. 135 
He begins at the nearest, and having sucked out 
the inside, draws the skin and head to the bottom 
of the cell, and begins another ; thus he proceeds 
with all, devouring one each day, and then 
spins himself a cone. This is rather remarkable 
— the green grubs seem all of the same age, and 
live all this while without eating; doubtless 
the mother wasp chooses them at a time when 
they are in a state of torpidity previous to their 
change, when they would desire nothing better 
than to lie quiet, which however they would be 
obliged to do from the manner in which they 
are piled. As it would be impossible for the 
wasp to convey them rolled up through the 
tube, she stretches them out, and carries them 
in her feet under her own body. When laid 
down, they naturally roll themselves up, and lie 
quiet, though doubtless without guessing why 
they are brought. 
Another wasp of about the same size hunts 
another kind of game for her young ones, which 
certainly appears rather singular, for she catches 
spiders, which have always been considered their 
most potent enemies. In some holes seven or 
eight have been found always of the same species. 
Some ichneumon wasps feed their maggots with 
flies ; and if the holes are opened they will be 
