Bau — Longevity in Saturniid Moths. 



67 



TABLE 43. 

 Period of Incubation. Eggs of P. cynthia. 



New York, 1913. 



considered, it is clear that temperature conditions di- 

 rectly influence the period of incubation, the warmer 

 days tending to accelerate the embryonic development 

 and the cooler days to retard it. 



Miscellaneous Data, 

 basilonia impebialis. 



About 12 pupae of B. imperialis were obtained in 1911, 

 but 10 of them were parasitized by a large dipterous in- 

 sect identified by Mr. Frederick Knab 17 as Belvasia bifas- 



17 Through the kindness of Dr. L. O. Howard. 



