EASTERN UNITED STATES. 251 



The egg is of a pale green color, in shape an oblate 

 spheroid, somewhat pointed at the base, and a little 

 truncated and depressed at the summit, marked by eigh- 

 teen or twenty longitudinal ribs, crossed by corrugations. 

 This hatches in about four days. 



Tho young larva is .04 of an inch in length, cylin- 

 drical, eacJi joint with four transverse creases; covered 

 with fine short down. Color green, semi-translucent. 

 Head twice as broad as joint 2 ; obovoid ; color yellow- 

 brown. 



After the first moult, which takes place in two days, 

 the length is .08 or .09 of an inch. In two days more 

 it passes the second moult, and the length is .12 of an 

 inch. Upper side dark green, a faint shade of yellow 

 over and along the basal ridge, rather macular. In two 

 days more it passes the third moult, when the length is 

 from .26 to .28 of an inch. The color is dull green, 

 yellowish along and over the basal ridge, specked with 

 v/hite or yellow-white as before this moult. In two 

 days more it passes to the fourth moult. 



The mature larva is from .7 to .9 of an inch long, 

 cylindrical, thickened at joints 3 and 4, the dorsum 

 of the last segment abruptly curved down to the end. 

 Color dark green, the lower side, and also the feet and 

 legs, pale green. It is creased as in the preceding stages, 

 and on the ridges are pale or whitish yellow points. 

 Along the sides is a supra-stigmatal stripe, above which 

 the color is yellowish for a little way, also a narrow 

 dorsal line, sometimes a subdorsal one. Head ovoid, 

 smooth, green. 



The chrysalis is half an inch long, compressed ; head- 

 case square, mesonotal process rounded. Color blue- 



