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TRANSFORMATIONS OF INSECTS. 
and paths. This hemipterous insect is very peculiarly made 
about the wings, which are usually imperfectly developed, for 
their membranous part remains in a rudimentary condition ; how- 
THE metamorphosis of Pentatoma grisea. 
ever, it happens every now and then that some individuals have 
their wings full grown and perfect in every respect. 
The engraving shows one of these insects with fully deve- 
loped wings, and others which have them in a rudimentary 
