I04 ENTOMOLOGICAL NEWS. [April, 



This is probably somewnat earlier than they would have been 

 laid in a state of nature, as I observed eggs in the field on 

 July 23d. 



Duration of egg stage eight or nine days. 



Larva. — Stage I. Length 1.6 mm. when newly hatched. 

 When three days old color is light green ; head black with a 

 few scattered hairs or bristles. Prothoracic plate nearly black, 

 not so long as the width of head. The tubercles characteristic 

 of the family are present, their color contrasting with the 

 greenish ground color. 



First moult passed in five days. 



Stage II. Length three or four mm. Color changed to gray, 

 otherwise much as in Stage I. No longitudinal stripes yet ap- 

 parent. Larvae spin down by a thread when disturbed. Dur- 

 ing first and second stages the larvae feed from the under side 

 of the leaf on the parenchyma alone, leaving the epidermis of 

 the upper side and the veins intact. Duration of second stage 

 five days. 



Stage III.* Length seven or eight mm. Head shining black 

 with few hairs or bristles. Body above with a light bluish drab 

 dorsal stripe, and a narrower subdorsal line of same color sepa- 

 rated by a dull black line. A similar dull black line runs 

 between the subdorsal drab one and the lateral yellow stripe. 

 The latter is conspicuously creased with black. A subspirac- 

 ular line of a pale yellow also creased with black and indis- 

 tinctly connected by broken lines and spots with the upper 

 yellow stripe. Prolegs with a blackish patch outwardly. 

 Ventral and inner side of prolegs pale flesh color with a few 

 dark dots. The longitudinal lines are quite even in width 

 throughout, but the edges are irregular and broken. Tu- 

 bercles black, and from each radiate about twenty stiff hairs 

 of moderate length. Hairs blackish except on subspiracular 

 tubercles where they are lighter colored. Duration of third 

 stage nine to fourteen days. Growth quite slow. Larvae in 

 this stage eat oval holes quite through the leaves from below, 



* See Lyman's description, Can. Ent.. 1887 (vol. xix, p. 186). His de- 

 scription of confusa larva five-sixteenths of an inch long corresponds to 

 Stage III. 



