alids which have over- wintered, an early summer brood, and a fall brood. In 

 tropical countries many species retain the form of the chrysalis during the dry 

 season, and emerge upon the wing at the beginning of the rainy season, when vege- 

 tation is refreshed and new and tender growths take place in the forests. 



THE IMAGO, OR WINGED INSECT 



We have already spoken at length of the form and structure of butterflies in 

 the preceding paragraphs, which were devoted to the anatomy of butterflies. It 

 remains for us at this point to call attention to the manner in which the butterfly 

 undergoes transformation from the chrysalis. This change is quite as interesting 

 as that which takes place when the caterpillar is transformed into the pupa; and 

 should any of my readers possess chrysalids I would advise them to watch carefully 

 and observe the curious events which follow one another rapidly when the imago 

 comes forth from the cerements of the chrysalis. The coverings which ensheathe 

 the head, the legs, and the antennae split, the head protrudes, the fore legs are dis- 

 entangled and are thrown forth, followed almost at once by the other legs, and the 

 insect proceeds to crawl out from the pupal skin, emerging with the wings as minia- 

 ture objects, the body trailing after as a long worm-like mass. Having liberated 

 itself from the shea things of the chrysalis, the insect immediately assumes a sta- 



37 



