82 
PSYCHE 
[August 
varied considerably, from about 8 to 27 days, according to the season. Upon the 
approach of warm weather, it gradually decreased and remained practically constant 
from about the middle of June to about the middle of SejJtcmbcr, or during the 
warm summer months. In the fall, it ra]>idly increased iu length, becoming twice 
as long in Novemljcr as it was for the first generation iu May, as would be expected 
from the fact that the mean daily effective tcm[)erature at that time of the year was 
very low. Table II is iutrodiiced to show as accurately as possible the lengths of the 
life cycles at tliff'erent dates in 191)4. 
Table II. Lengths of the Life Cijcle, Pari.<t, Te.vas, 1004- 
Approximate length 
of cycle. 
Lot No. 
Dates. 
Eggs deposited. 
Adults out. 
Days. 
Hours. 
1 . 
May 3 May Hi 
A lay 3 
A I ay Hi 
13 
2. 
[May 2li June li 
P. M. Alay 2(i 
Noon, June ti 
10 
21 
:i. 
May 27 June 7 
1’. M. Alay 27 
.A. AL June 7 
10 
17 
4. 
June 1 June 12 
A. M. June 1 
A. AL, June 12 
10 
17 
5. 
June 4 June 14 
1’. Al., June 4 
Noon, June 14 
9 
20 
6 . 
June 14 June 22 
A. Al., June 14 
.A. AL, June 22 
7 
22 
7. 
June 14- June 22 
.A. AL, June 14 
A. AL, June 22 
7 
15 
8. 
June 20 June 28 
A. M., June 20 
P. AL, June 28 
8 
6 
9. 
June 22 June 31) 
Noon, June 22 
Noon, June 30 
8 
0 
It). 
June 22-July 1 
P. M., June 22 
A. AL, Jidy 1 
s 
14 
11. 
July 1 July 9 
A. AL, July 1 
A. AL, July 9 
8 
0 
12. 
Julv 2t)- July 28 
P. AL, July 20 
A. AL, July 28 
7 
19 
13. 
July 29- .August ti 
Noon, July 29 
.A. AL, August 0 
7 
20 
14. 
Sept. 12-Se[)t. 20 
P. AL, Sept. 12 
P. AL, Se]>t. 20 
8 
t) 
15. 
Sept. 21 -Sept. 30 
.A. AL, Sept. 21 
.A. AL, Sept. 3t) 
8 
23 
Hi. 
Sept. 2li Oct. 4 
.A. AL, Sept. 20 
A. AL, Oct. 4 
(i 
17. 
Sept. 28- ( )ct. ti 
.A. AL, Sept. 28 
P. AL, Oct. 0 
8 
9 
IS. 
Oct. 1 Oct. 14 
Noon, ( )ct. 1 
Noon, ( )ct. 14 
13 
0 
19. 
< )ct. 14— Nov. 2 
A. AL, Oct. 14 
A. Al., Nov. 2 
19 
3 
2t). 
(Jet. 14-Nov. 7 
A. AL, Oct. 14 
P. AL, Nov. 7 
24 
ti 
21. 
Oct. 14-Nov. 8 
Oct. 14 
Nov. 8 
25 
0 
22. 
Oct. 14-Nov. 10 
P. Al., Oct. 14 
P. AL, Nov. 10 
27 
0 
