ORDER IV. MOTHS AND BUTTERFLIES. 



163 



has, besides, an angular reddish-white spot near the middle 

 of each of the wings. The wings of both expand from 

 three to four inches. 



The female deposits her eggs, according to the geograph- 



ical latitude of the country, in June or July, generally upon 

 the twigs of sassafras-trees, and in several clusters, which 

 are hatched in about three weeks. The caterpillar, before 

 its metamorphosis, measures about two and a half inches. 

 It is of a bluish-green color, with the exception of the head, 



