Rau — Longevity in Saturniid Moths. 



TABLE 39. 



Period of Incubation. T. polyphemus. Augusta, Ga., 1918. 



65 



TABLE 40. 

 Period of Incubation. Eggs of T. polyphemus. Fall River, Mass., 1918. 



9 

 No. 



Date of 

 1st Day's 

 Deposit 



5-11 

 6-10 



TABLE 41. 

 Period of Incubation. Eggs of T. Polyphemus. St. Louis, 1912. 



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. 



