INTRODUCTtOX. 



19 



proceed, the curious contrivances resorted to for protecting 

 insects in this helpless state. 



After a certain time, the insect which has remained in 

 its pupa-case, like a mass of jelly without shape, is graduallj^ 

 preparing for its final change, when it takes the form 

 of a perfect insect. This state was called by Linnaeus 

 Imago, because the insect, having thrown off its mask, 

 becomes a perfect image of its species. Of some, this last 

 portion of their existence is very short, others live through 

 a year, and some exist for longer periods. They feed 

 lightly, and never increase in size. The chief object of all 

 is to perpetuate their species, after which the greater 

 number quickly die. It is in this state that they exercise 

 those remarkable instincts for the preservation of their race, 

 which are exhibited in their preparations for the shelter of 

 their eggs, and the nourishment of their larvae. The follow- 

 ing are examples of insects in the imago, or perfect state. 



Insects in the Imago or perfect state. 



a, Xemoptej-yx coa. Leach.— &, Myrmeleon formicalytix, Fabuicius 

 Fabkicius.— ti, A''epa cinerea, Lin's jeus. 



Hesi)eria comma. 



