284 THE CANADIAN ENTOMOLOGIST. 



the end. Colour of the body Dale yellowish-green, a more distinct 

 dorsal and subdorsal stripe and the subdorsal space with mottlings of 

 darker green ; stigmata sordid white. Duration of this period four days. 



After fourth Moult. — Length, .85 to .95 inch. About the same as 

 during preceding period, but the head hairs have a brown tinge, and 

 joint 2 is brown, with a whitish dorsal line, and sometimes subdorsal 

 also. Duration of this period seven days. 



Pupa. — Length, .55 inch; diameter, .15 inch. Nearly cylindrical; 

 from the head to the posterior part of the wing-cases .37 inch, these 

 extending nearly to the posterior edge of joint 5 ; body pretty well 

 covered with short, simple, white hairs ; head rounded, eyes rather 

 prominent, a prominent tuft of hairs between them (frontal hairs they 

 might be called), another anterior tuft on the inner edge of margin of 

 eye, more on the outer margin, while the space around the eye between 

 these tufts is without hairs. Colour gray ; head gray with a greenish 

 tinge except on the eye-space ; dorsal part of thorax gray with a slight 

 green tinge, three transverse rows of small black spots, the first, one on 

 each side, subdorsal ; the second row six, one each side of a very slight 

 green dorsal line and one on each side of what would be a subdorsal 

 line if such were present, a little anterior to the others ; third row six, 

 one on each side of the dorsal line and one outside and a little anterior 

 to this and one on the shoulder of hind wings. Spiracle just back Of 

 the eye large, elevated, dark or Vandyke brown, the outer portion pale. 

 Wing-cases green, ribbed as usual, mottled slightly in two shades, but not 

 strongly contrasting ; abdomen with each joint gray (the gray of the 

 whole pupa a more sordid white with a gray tint, as there is none of the 

 dark gray about it), slightly green tinted, the incisures more distinctly 

 pale green, each joint with its row of small black spots across the middle, 

 supplemented back of the row with a less perfect row of smaller spots, 

 the first row of six spots, of which the outer spot on each end of the 

 row is the black spiracle ; cremaster brown, elongated hooks at the end 

 that fasten into a thin, loose button of silk. Duration of this period eight 

 days. 



The larvffi, when ready to pupate, folded a leaf together and loosely 

 fastened it with silk, but there was no lining of silk except a small, thin 

 button to which the cremaster was attached. 



The eggs were sent me by Dr. C. Hoeg, of Decorah, Iowa. At first 

 he sent me two eggs under date of July 31st, 1897, that he had found on 



