Vol. xxiii] ENTOMOLOGICAL NEWS 409 



Taking its hold between two of the abdominal segments, by 

 grasping a portion of the larval integument at the incision be- 

 tween the segments, with great strain, the cremaster was slow- 

 ly moved toward the silken pad; during this operation, the 

 chrysalis also climbed over the larval cast. When the cremas- 

 ter had approached the silken net, it was attached to it by a- 

 striking movement or else simply by dragging it across the 

 surface of the silk. In this caterpillar, this operation took 

 much effort and it very nearly missed the pad altogether. As 

 soon as it had succeeded, however, with a violent movement 

 the larval exuvia was thrown off; the chrysalis then whirled 

 or spun its body a few times, to further entangle the cremaster 

 and make sure of its position. It then remained quiet and 

 after from four to six hours had hardened and become fully 

 colored. 



At the beginning, the larval integument parted along the 

 meson of the third thoracic segment, the opening rapidly ad- 

 vancing to the head, the plates of the latter parting obliquely 

 from the meson, along the epicranial sutures. The dorsum of 

 the prothorax is the first portion of the chrysalis to become 

 visible. (In a case observed later, the integument parted nt 

 the caudal margin of the second thoracic segment, advancing 

 to the epistoma, after reaching the head, following along the 

 paraclypeal pieces. The ecdysis did not proceed farther, the 

 insect dying). 



(3) This caterpillar was removed, after being suspended 

 for some hours, and placed upon its side on a table. It was 

 quiet until 11.06 P. M., August 15, when violent convulsions 

 commenced forward internal movements from the caudal 

 end as if trying to push through its confining skin. The move- 

 ments became very violent before successful; the following: 



Integument parts at meson of third thoracic segment and reaches 



the head whose plates part mesially 11.09^ p. m. 



Thorax excluded 1 1 : i2 l / 2 p. m. 



Body excluded, except anal segment 1 1 :i8^ p. m. 



Cremaster excluded 11:32 p. m. 



Made useless attempts to attach cremaster; consider its position. 



