THE CANADIAN ENTOMOLOGIST. 33 



head deep green in front, dull green at back, the stripes brown and horns 

 brown. Duration of this stage in August 5 days, in May 8. 



AFTER THIRD MOULT.— Length .55 inch ; one day later .75 to 

 end of horns, which are held in the plane of the body, the face being 

 bent down as in Apatura ; shape as at last two stages ; in the summer and 

 fall larvae the color of body is now reddish-buff, the dorsal band dark 

 brown ; the sub-dorsal stripe reduced to a broken dark brown line, only 

 distinct at the extreme hinder end of each segment from 3 to 10, making 

 in effect a line of spots ; on the middle of the side a dark brown stripe ; 

 at base a rounded ridge, buff colored, and beneath it a brown line ; head 

 shaped as before, but higher and the horns less divergent ; color of face 

 green, with brown stripes as before ; the horns brown in front, and as 

 well as the head gray-brown behind ; as the larva advances the green of 

 the face is replaced by brown, and the colors of the body change gradu- 

 ally to buff and reddish-gray, the former the dorsal color, the other of the 

 sides (figs. b,b"). There was nofourth moult, the stage just described lasting 

 till maturity, at which the larval length was .90 to .95 inch. In the summer 

 (August) brood the larva ceased feeding on the eighth day after the third 

 moult, spun a button of white silk, suspended on the ninth day, and 

 changed to chrysalis on tenth. The larva which I fed in October became 

 lethargic 3rd November. On 24th of that month, after a few warm days, 

 it was discovered to be active, and had recently "passed its third moult. 

 It fed at intervals (being kept in a warm room) till the 1st of February, 

 when it suspended and made chrysalis on 4th. 



On 17th April, 1878, I captured a female Gemma, and obtained a 

 number of eggs, from which eight larvae reached chrysalis. All these 

 were green at third moult, and to maturity, and the chrysalids were green. 



LARVA OF SPRING BROOD, AFTER THIRD MOULT— Color 

 bright yellow-green • the medio-dorsal band dark green • on the sides 

 ihree yellow lines (one sub-dorsal and heavier than the other), and at 

 base a yellow raised stripe ; tails pink-tipped ; head greenish-white on 

 front face and at back, the stripes dark brown, the horns reddish-brown. 

 Time from third moult to chrysalis 5 to 6 days. 



CHRYSALIS— Length .52, greatest breadth. 14 inch; shape cylin- 

 drical, thickest at 6th and 7th segments ; slightly depressed on dorsum 

 behind base of mesonotum, which is rounded, rather prominent, carinated ; 

 head case truncated, sloping at a low angle from the mesonotum, beveled 



