Hypermetamorphosis 



wardly. I have at every season of the year 

 examined the viscera of the pseudochrysa- 

 lids, which generally remain stationary for 

 a whole year, and I have never observed 

 other forms among their organs than those 

 which we find in the secondary larva. The 

 nervous system has undergone no change. 

 The digestive apparatus is absolutely void 

 and, because of its emptiness, appears only 

 as a thin cord, sunk, lost amid the adipose 

 sacs. The stercoral intestine has more 

 substance; its outlines are better defined. 

 The four gall-bladders are always perfectly 

 distinct. The adipose tissue is more abund- 

 ant than ever: it forms by itself the whole 

 contents of the pseudochrysalis, for in the 

 matter of volume the insignificant threads of 

 the nervous system and the digestive ap- 

 paratus count for nothing. It is the reserve 

 upon which life must draw for its future 

 labours. 



A few Sitares remain hardly a month in 

 the pseudochrysalis stage. The other 

 phases are achieved in the course of August; 

 and at the beginning of September the insect 

 attains the perfect state. But as a rule the 

 development is slower; the pseudochrysalis 

 f?ocs through the winter; and it is not, at 

 the earliest, until June in the second year that 



"9 



