Rau — Observations on Samia Cecropia, Linn. 35 



however, in the fertilized females, where observations 

 were made on a greater number of moths, that there is no 

 relation between a long life and perfect oviposition, and 

 a short life and imperfect oviposition. Were observa- 

 tions made on a larger number of unfertilized females, the 

 results, no doubt, would lead to similar conclusions. 



(b) The relation of the duration of life of fertilized 

 female to the number of eggs retained at death. 

 Notes derived from observations in seven instances. 



The figures show that there is absolutely no relation 

 between a long life and perfect oviposition and a short 

 life and imperfect oviposition. Here we see imperfect 

 oviposition in a long life, perfect oviposition in a short 

 life, and vice versa. 



(c) The relation of time spent in copulo to the number 

 of eggs retained. 



Notes made from observations in twelve instances. 



The above figures show that there is no relation be- 

 tween a longer or shorter period of copulation and per- 

 fect or imperfect oviposition. In some cases we see a 



