Rau — Observations on Samia Cecropia, Linn. 33 



The average number of eggs retained by unfertilized 

 females was 95. 



(g) Comparison of the number of eggs remaining in the 

 body of the fertilized female ivith those remaining in 

 the unfertilized female. 

 The greatest number of eggs remaining in the body of 

 any one fertilized female was 125. The greatest number 

 of eggs remaining in the body of any unfertilized female 

 was 201. The unfertilized female retained 76 more eggs 

 than the fertilized. The least number of eggs retained by 

 a fertilized female was zero in three instances, as well as 

 in the case of one unfertilized female. The average num- 

 ber of eggs retained by fertilized females was 50 5/12. 

 The average number of eggs retained by unfertilized 

 females was 95. The average number of eggs retained 

 by unfertilized females was greater than the average num- 

 ber of eggs retained by fertilized females by 44 7/12. 



(h) The entire number of eggs contained in the body of 

 female at hatching computed by the number of eggs 

 deposited plus the number of eggs retained. 

 Observations computed in fifteen cases. 



The greatest number of eggs carried by any one female 

 was 362. The smallest number carried by any one female 

 was 187. The average number carried was 292 4/15. 



