Rau—Longevity in Saturniid Moths. 65 
TABLE 39. 
Period of Incubation. T. polyphemus. Augusta, Ga., 1918. 
9 Day’s DEposit Date of 
1st Day’s 
ee 1 2 3 4 | Deposit 
pero ey 11 5-20 
Seb oe ot 8 8 6-13 
Sno 7 7 oe 6-15 
5 9 Bee erar se 6 6 6 6-17 
a ee 7 7 ibe 6-15 
| ARR 35 y 4 fi 7 6-24 
TABLE 40. 
Period of Incubation. Eggs of T. polyphemus. Fall River, Mass., 1913. 
fe) Day’s Deposit Date of 
1st Day’s 
No 1 | 2|3 | 4 | 5 | 6 | Deposit 
6-10 
wo Pp 
joo 
b= 
13416 29} St 
8 9 
TABLE 41. 
Period of Incubation. Eggs of T. Polyphemus. St. Louis, 1912. 
re) Day’s DEposItT Date of 
—— | Ist Day’s 
No. 5 2 “3 4 Deposit 
i. ear ar 8 8 8 8 7-28 
Be. ees 7 7 7 7 8-11 
days, and the second, laid one month later in the season, 
took only 8 to 10 days. But more significant still, in 
reference to the influence of temperature upon incuba- 
tion, are the two females listed in Table 41 which ovi- 
posited the last of July and the middle of August. The 
eggs of the first required but 8 days for developing, and 
the second only 7 days, the shortest period yet observed 
for Polyphemus eggs, and the latest in the season also. 
