282 Rei'ort of the Department of Entomology of tub 



ance of the one slwwn at Plate XL, Fig. 2, and by the srcond 

 day all w-ere drawn over as shown at Fig. 3. The caterpillars 

 thus roll the leaves in a manner somewhat similar to a true leaf 

 roller. They evidently feed for a time in these retreats before 

 pupating, as out of a large number examined the parenchyma on 

 the upper side was entirely eaten away in. most cases. 



Before pupating the caterpillars line their retreats heavily with 

 white, closely woven silk. Every one examined both in the labora- 

 tory and in the orchard was lined in this w^ay. The silk is not 

 closely attached to the leaf except at the edges which are fas- 

 tened together and to the leaf tissue. Within this snug retreat 

 the chrysalis is formed. At Plate XL, Fig. 4, the edges of the 

 leaf that were drawn together have been pulled apart, exposing 

 the white, cocoon-like covering of the chrysalis. In this stage 

 the insect evidently passes the winter, although it is probable 

 that some of the larvaj hibernate, as Forbes^ states he has found 

 them as late as the middle of November. Our own observations 

 are similar to those of Forbes, as we found hibematirg larvee 

 Dec. 1. 



The full-grown caterpillar. — A full-grown caterpillar is shown 

 much enlarged at Plate XL, Fig. 5. The following description is 

 a modification of that by Brunn.^ 



Detailed descriptio^ns of the other stages are reserved for a 

 future publication. 



'Fifteeuth Ann. Rept. State Ent, 111., p. 57. 



•Second Report Cornell Univ. Agr. Exp. Sta., p. 153. 



Length 5.5 mm. to 7 mm. General color light greenish drab to slate. 

 With the exception of the first, each segment has^eight dull white slightly 

 raised blotches, four on each side of the median line. Each bears one or 

 two slender white hairs. Head half as broad as first segment, light yellow- 

 ish green to light brown. Mouth parts brown. Along the posterior mar- 

 gin of the head is a row of six large deep black irregular spots. The two 

 end spots are sub-marginal, triangular and slightly larger than the others. 

 There is also a somewhat paler spot at the base of each mandible. A row 

 of four similar spots extends across the first segment midway between the 

 anterior and posterior margins. The spots are larger than those or the 

 head. Thoracic, abdominal, and anal legs well developed. Outer surface of 

 thoracic legs black and smooth. Inner surface same color as ventral sur- 

 face of body and s^parsely furnished with hair. 



