ENTOMOLOGICAL CONTRIBUTIONS. 127 



hairs ; those of the upper row green and without hairs. The yellow 

 stripe of the side and the yellow bands marking the incisures now 

 appear. The t\vo superior of the four spots of the head are no longer 

 seen. The larva, after its molting, consumes its exnvia. 



Third molting on August Oth. Larva seven-eighths of an inch in 

 length, with no material change in appearance from that presented 

 in the preceding stage. 



The fourth molting was on August 17th, developing all the features 

 of the mature larva. Length one inch and one-fourth. Color a pale 

 apple-green, shading darker below the stigmata; incisures yellow, 

 and a yellow line on the upper margin of the substigmatal fold. Six 

 rows of small pink warts, each with one or more black hairs. Scat 

 tered over the body are a few white hairs, some of which are of a 

 clavate form. Anal shield brown, triangular, yellow bordered ; anal 

 plates brown, bordered anteriorly with yellow. 



By the 31st of the month all of the larvae had inclosed themselves 

 in cocoons. 



For several days prior to the disclosure of the moth, the pupa 

 (which is fastened by its terminal hooks to some threads in the end 

 of its cocoon) may frequently be heard in motion, as if rotating from 

 side to side. When the time for its transformation has arrived, the 

 pupal-shell is broken by the muscular force of the inclosed limbs and 

 a wet spot appears on the end of the cocoon, indicating the point at 

 which the moth is to emerge. A sound like gnawing is now heard, 

 which is probably produced by the friction of the base of the fore- 

 wings against the cocoon in the effort to force an opening. After 

 these periods of activity, in which the motion is often sufficient to pro 

 duce a considerable movement of the cocoon, intervals of quiet follow. 

 The wet spot increases in size until its diameter about equals that of 

 the body of the moth. At length the end yields, and the head of 

 the moth is seen through the still connected threads. It partially 

 withdraws itself, and then again resumes its effort to escape. After 

 one or two more rests, the antennae are protruded, shortly followed by 

 the first pair of legs, when the moth rapidly disengages itself from 

 the cocoon, usually emerging with its back downward, and quickly 

 seeks some position where it can attach itself, with its small wet 

 wings hanging downward over its back. The anterior wings are the 

 first to expand ; next the body of the posterior wings and last the 

 tails. In about three hours time the wings are fully expanded, and, 



