EASTERN UNITED STATES. 293 



onisciform, flattened, the dorsum flat at the top and 

 sloping towards the base. Color greenish, the whole 

 surface irregularly dotted with black ; and from most, 

 but not all, of the dots come white hairs, those on the 

 dorsum curved back, those nearer the base curved partly- 

 downward and partly back. Head obovate, long, and 

 narrow, smaller in proportion to the second segment 

 than at the last stage, and partly concealed, even when 

 active, in joint 2. Color black. 



After the second moult they are .12 of an inch long, 

 broader and flatter than before. On each side of the 

 narrow dorsal ridge is a slightly-raised ridge, caused by 

 the tubercles ; at the base of the body a fold, and the 

 hairs from this and the ridge are longer than elsewhere. 

 Color green, but with a rusty tint, caused by the numer- 

 ous reddish points. Above the fold these take the form 

 of a line or slight stripe. 



Moulting again, the length is .2 of an inch, and the 

 color clear apple-green ; the crests of the dorsal ridge, 

 and also the folds at the base, are whitish ; part of the 

 way a reddish line on each side of the fold ; also a double 

 oblique line of pale green on each side of each segment. 



After the fourth moult they are .36 of an inch long, 

 and the width is about one-fourth the length. They 

 are of the same general form as before, but highest in 

 front, and sloping backward. Color greenish, with darker 

 green lines, and oblique vinous lines on the sides. Head 

 black. 



The chrysalis is .26 of an inch long, shaped much 

 like the mature larva ; of a greenish, brownish, or sordid 

 white color, with three rows of black dots, and sparingly 

 clothed with whitish hairs. 



25* 



