92 Studies on Life-history of Bomhycine Moths. 



Stage I. — Length 8 mm. A very large larva for one in the first 

 stage. The body is much flattened, somewhat Tortricid-like, taper- 

 in"- somewhat towards the end. The head is broad, flattened, dark 

 chestnut. The prothoracic segment is broad and flattened, the pro- 

 thoracic shield very large and thick, of the same color as the head. 

 The body is pale flesh-colored; across the front of each segment is 

 a broken reddish-pink line of spots, while on the end of each seg- 

 ment is a conspicuous broad band of the same color. The pilifer- 

 ous warts are dark and conspicuous, giving rise to a long slender 

 hair, some of them as long as the body is broad, or a little longer. 

 In some specimens the piliferous warts are almost reddish. 



The subsequent changes are probably of little interest, as the 

 adaptation of form to burrowing habits, so striking in the fully- 

 developed larva, is already exhibited in the freshly-hatched cater- 

 pillar. 



