Hypermetamorphosis 



pearance; it represents a perfect balloon, an 

 ellipsoid of which the sections perpendicular 

 to the major axis are circles. Something has 

 also come to pass of greater importance than 

 this expansion, which may be compared with 

 that which we obtain by blowing into a 

 wrinkled bladder. The horny integuments 

 of the pseudochrysalis have become de- 

 tached from their contents, all of a piece, 

 without a break, just as happened the year 

 before with the skin of the secondary larva; 

 and they thus form a fresh vesicular enve- 

 lope, free from any adhesion to the contents 

 and itself enclosed in the pouch formed of the 

 secondary larva's skin. Of these two bags 

 without outlet, one of which is enclosed 

 within the other, the outer is transparent, 

 flexible, colourless and extremely delicate; 

 the second is brittle, almost as delicate as the 

 first, but much less translucent because of its 

 yellow colouring, which makes it resemble 

 a thin flake of amber. On this second sac 

 are found the stigmatic warts, the thoracic 

 studs and so forth, which we rroted on the 

 pseudochrysalis. Lastly, within its cavity 

 we catch a glimpse of something the shape 

 of which at once recalls to mind the secondary 

 larva. 



And indeed, if we tear the double envelope 



121 



