Bau — Longevity in Saturniid Moths. 



TABLE 21. 

 Age When First Eggs Were Deposited. 



37 



Lot 



Promethea, St. L 1911 



Luna, St. L 1911 



Luna, Pike Co 1911 



Cynthia, N. Y 1912 



Polyphemus, St. L 1911 



Polyphemus, N. Y 1912 



Polyphemus, Ga 1913 



Polyphemus, St. L 1913 



Polyphemus, Fall River 1913 



Total 



28 



11 



9 



6 



7 



11 



11 



39 



20 



142 



terial until after mating much would be gained and noth- 

 ing lost, since, as the foregoing discussions have shown, 

 oviposition is more complete after mating than without 

 it in spite of the expenditure of a comparatively long 

 time for copulation. 



In 1912 some Cecropia, kept in a living-room at the 

 ordinary temperature, emerged in February and March. 

 After emerging they were subjected to varying degrees 

 of temperature. It was noticed that oviposition in these 

 insects commenced much later than usual in life. "We 

 have previously recorded that unmated females of this 

 species (these were unmated) usually oviposit on the 

 second or third day after leaving the cocoon. Under 

 these abnormal conditions these 19 insects first ovi- 

 posited on the following days of age : 



18 days 2 individuals. 



17 days 1 individual. 



15 days 3 individuals. 



14 days. , 2 individuals. 



13 days 2 individuals. 



8 days 1 individual. 



6 days 4 individuals. 



5 days 2 individuals. 



4 days 2 individuals. 



