MaTch — April 1S90.] 



PSYCHE. 



831 



out any other noticeable movement. 

 This I was unable to detect in E. an- 

 iiopa, perhaps because the cellar tem- 

 peratin"e would not vary nearly so much 

 as the outer air, especially as it contained 

 a furnace at about twenty-five feet dis- 

 tance ; but particular attention was paid 

 on the coldest and warmest days with- 

 out detecting any difference of position 

 of the wings. What the cause of the 

 slight forward and backward move- 

 ments might be was not discovered ; it 

 seemed to have no relation to the 

 weather or to the amount of light. It 

 may be added that until the position be- 

 came oblique the wings were held hori- 

 zontally with a scarcely perceptible tip 

 upward toward the "tread," the legs on 

 the upper side being bent slightly more 

 than those on the lower side ; but when 

 the oblique shift was made, the tip was 

 very slightly increased, to about ten de- 

 grees in all. 



It finally flew to a small window 

 about six feet above its hibernating post, 

 where it was found at about 2 p. m. on 

 28 February, having left its winter 

 quarters since i p M. It was in a curi- 

 ous position : it had evidently alighted 

 on the vertical surface of the lower sash, 

 head upward, and had lost its hold, the 

 smoother surface not permitting its 

 claws to hold so ^vell as in its hiberna- 

 ting station, and had fallen backward 

 vipon the top of the ledge an inch or two 

 beneath, and there remained upside 

 down, balanced on the top of its erect 

 wings, the margins of the hind pair 

 spreading by the weight and so prevent- 



ing it from tipping over ; in this strange 

 position, feet upward, where a mere 

 breath of air would have thrown it over, 

 but from which it could free itself only 

 by flapping its wings, it remained for 

 more than an hour, but by about 3 p. m. 

 was found to have righted itself and 

 pitched with erect wings, head down- 

 ward, on the cellar wall a few inches 

 away. 



February 28 was a cloudy, cool day 

 with rain, the thermometer at the time 

 of its flight about 42°. In the cellar it 

 was about 4S°-5o°. The only time that 

 the outer air had free access since the 

 closing of the windows late in Novem- 

 ber was when the wood was brought in 

 early in February. 



The butterfly i^emained in the position 

 it had taken on the afternoon of 28 Feb- 

 ruary until about noon of 5 March. 

 During the warmer days when the rays 

 of the sun fell directly on the apical half 

 of the wings, it would thrust its anten- 

 nae forward at an angle of about 45° 

 with each other and at an angle with 

 the costal edge of the fore wings of about 

 35° ; at other times the antennae were 

 kept between the fore wings out of sights 

 just behind the costal margin, as I found 

 out by parting the wing-tips carefully 

 without in the least disturbing it. It 

 shifted its position slightly from day to 

 day much as it had done on the stair, 

 but retained practically the same foot- 

 hold with which it had alighted. I had 

 to pass the place more than a dozen 

 times a day, my shoulder within a foot 

 of the butterfly, but the only eflect 



