92 



THE BUTTERFLIES OF THE 



two discal bars, with yellow on the subcostal vein, and 

 the orange patches of the hind wings are larger. 



The eggs are of a delicate light yellow, smooth and 

 round, with the exception of being slightly flattened 

 where they are attached to the leaf. These are depos- 

 ited on the leaves of parsley, celery, parsnips, and other 

 related plants upon which the larvae feed. 



The young larvae are nearly black, with a broad white 

 band across the middle, and another on the hind part of 

 the body; thickly beset with bristles which arise from 

 little tubercles. The second stage differs little from the 

 first ; as also the third, though there are bright spots on 

 the body. The fourth stage is a bright green ground 

 color with black bands, which are broad on the middle 

 of the segments. These bands are interrupted by brick- 

 red spots, which are arranged in three rows on each side. 

 The tubercles are scarcely perceptible. 



The fifth stage is the mature larva. When full grown 



Fig. 15. 



Fig. 16 



Papilio Polyxenes, mature larva. 



Papilio Polyxenes, pupa. 



the caterpiHar is about an inch and a half long, ot a 

 bright green color, with a transverse black band on each 

 segment containing a row of yellow spots. The scent- 

 organ in this species is yellow. 



