EASTERN UNITED STATES. 225 



It moults again in three days, but the characters do 

 not change. Length from .38 to .4 of an inch. 



In five days more it moults again, when it measures 

 .6 of an inch, the shape and markings unchanged. 



The mature larva is from 1.2 to 1.4 inches long, sub- 

 cylindrical and robust, the dorsum well rounded, the 

 sides much less convex, rather flattened, and sloping to 

 a broad base ; the last segment ending in a forked tail. 

 It is banded with tubercles as at the first part of this 

 stage, but these have constantly diminished in size as 

 the larva progressed, and are in no place so distinct, and 

 many have disappeared altogether. General color either 

 bright yellow or ochre-yellow, a little whitened along 

 the edges of the dorsal area ; dorsal stripe very narrow, 

 and either black or deep blue, but greenish on two or 

 three anterior joints ; the two side-stripes are dull or 

 sordid green, as is also the under side. Head subquad- 

 rate, the sides rounded, the front moderately rounded, 

 the top depressed, on each vertex a short stout stag-horn 

 process, with four prongs, these and the entire front and 

 sides of the processes black ; the back is green, and upon 

 it and at the sides below are four green similar prongs, 

 spurs similar to those in the former stage ; the rest of 

 the head greenish white and black, and thickly covered 

 with a fine yellow down ; the processes and spurs much 

 covered with long white hairs. 



The chrysalis is from .7 to .85 of an inch long, shaped 

 much as in the other species. The color is pale yellow- 

 green, finely streaked and speckled with light buff over 

 head-case, mesonotum, and wing-cases, and speckled over 

 abdomen. In six or seven days after pupation the butter- 

 fly emerges. Like the other species, this feeds during the 



