EUPLOEINAE: ANOSIA PLEXIPPUS. 739 



frradually drawn forward, the tip clinging to the moist body until the last ; 

 but they did not regain their full elasticity for some time. The remaining 

 process scarcely lasted a minute; the head, however, still remained 

 attached and was only removed after repeated lateral abrasions and violent 

 efforts with the front legs. After these efforts, the insect remained quiet, 

 resuming the same attitude, with bent head, which it had taken before 

 moulting, awaiting undoubtedly the hardening of its integuments, and it 

 was nearly two liours before the colors of the head became bright and 

 fixed ; the larva then first devoured all the old pellicle, except the head, 

 and afterward moved off in search of daintier diet. 



The chrysalis and pupation. The chrysalis usually hangs for about 

 twelve days, ranging in New England generally from nine to fifteen, but in 

 the south, according to Edwards, from five to fifteen ; in one case he 

 reports it was reduced to two days ! On the other hand Gundlach says it 

 hangs from eight to twelve days in Cuba, and Dewitz gives twelve days as 

 the season in Venezuela. I have known it to be extended here to three 

 weeks. I once tried an experiment with a chrysalis in the middle of 

 August in a room where a carefully graded thermometer registered 68 . 25° F. 

 Placing the chrysalis next the bulb of the inclined thermometer the mer- 

 cury rose to 68.5°, and on the removal of the chrysalis it fell again to its 

 former reading. 



The clirysalis is a beautiful object and as it liangs pendant from some old fence 

 board, or from the under side of an Asclepias leaf, it reminds one of some large ear- 

 drop; but though the jeweller could successfully imitate the form, he might well 

 despair of ever reproducing the clear pale green, and the ivory black and golden marks 

 which so characterize it. (Riley, loc. cit.) 



Mr. Gosse in writing of the metamorphosis of this species says (Let- 

 ters from Alabama, 186-7) : — 



The change of form which the envolved pupa undergoes is most conspicuous in 

 the suspended butterflies ; and I have never seen it more remarkable than in this of 

 thearchippus although I have observed the metamorphosis of many species. ... In this 

 ca.ethe abdominal segments were at first much elongated, being distinctly separable, 

 as in the caterpillar; those of the thorax, on the contrary, were contracted, while the 

 win-s were small, thick and wrinkled; their extremities being free, for a purpose we 

 shall soon discover. The whole skin was soft, moist and pulpy, and the color bright 

 green, with alternate yellow bands. In a few hours, the abdominal segments had 

 contracted into the form of a smooth, blunt cone, all traces of the divisions being 

 lost except where a fine line, scarcely perceptible, marked their position; the thoracic 

 se-raents had much lengthened , and the wings now occupied the half of the entire length ; 

 their tips, which before were free, had stretched beyond their first Ijoundary, far over 

 the abdomen, and were now fixed in the general outline. The whole surface was 

 become tense, hard and glossy, and the hue a uniform greenish white. 



In describing the final changes of the chrysalis, Peale says (Lep. 

 Amer.) : — 



On the tenth day, the golden spots begin to lose their brilliancy and the beautiful 



