THE CANADIAN ENTOMOLOGIST. 257 



Cocoon. — Outline elliptical, fastened to the flat side of the box; 1.50 

 inches long by .70 inch wide and .30 inch high or deep, a thin film of silk 

 next to the board between the pupa and the upper side of the cocoon 

 that extends out beyond the cocoon as though the larva had first covered 

 an area of the board before forming the other part of the cocoon ; the 

 outer part compact except next to the head where it is less so, as though 

 preparing a place to emerge ; the hairs of the body woven into the cocoon 

 with the silk ; smooth inside ; the pupa not attached. Colour light grey, 

 yellowish white inside. The larva makes the cocoon by beginning at one 

 end and working towards the other, and after completion loosely fastening 

 the entrance. 



Chrysalis. — Length 1.05 inch, width of joint 5 .40 inch, depth .30 

 inch, length to the posterior part of the wing cases .55 inch, these 

 extending to the middle of joint 5 ; length of tongue case .40 inch. The 

 shape is oblong, flattened, ventral side uiore so than the dorsal, rounded 

 about equally at both ends, no hooks or cremaster at the anal end but 

 six pointed elevations that are not prominent, a dorsal ridge or pronotum. 

 Colour chestnut-brown, dorsal line darker, head pale, anterior part almost 

 greenish-white. Duration of this period about fifty-five days. 



There is only one brood in a season, the aggregate of the figures given 

 in the periods of duration of the different stages amounting to 347 days. 

 The eggs from which these notes were taken were sent me by my friend 

 Mr. James Angus, of West Farms, N. Y. The letter accompanying them 

 stated that the eggs were deposited the latter part of September, 1888. 

 There were two masses of them, in elongate strings, not quite straight, 

 one on a leaf and the other on a twig of apple. The mass on the leaf 

 was about 1.15 inches long, the other was about .80 inch. Each string 

 was a single row of eggs ; each egg covered over with black hairs from 

 the abdomen of the mother moth. They were placed obliquely on their 

 sides in the string. 



During the first part of their larval period they eat about as voraciously 

 and grow as rapidly as most moth larvae, but after the last moult they 

 feed but little from day to day, the most of the time lying stretched out at 

 full length on a twig or on the side or top of the box. With the rather 

 flat body, made to appear much more so by the lateral tubercles and their 

 tufts of spreading hairs, they simulate perfectly a slight enlargement in an 

 apple twig or small limb. 



