32 Trans. Acad. Sci. of St. Louis. 



(d) Comparison of the number of eggs deposited by fer- 

 tilized and unfertilized females. 



The average number of eggs deposited by the fer- 

 tilized females was 263 3/11. The average number of 

 eggs deposited by the unfertilized females was 159. 



The average number of eggs deposited by fertilized 

 females was greater than the average number of eggs 

 deposited by the unfertilized females by 104 3/11. 



The figures show that the fertilized females lay the 

 greater number of eggs. 



(e) The number of eggs remaining in the body of the 

 fertilized females when overtaken by death. 



Notes derived from observations in twelve instances. 



The greatest number of eggs retained at death was 125, 

 In three instances no eggs were retained at death. The 

 average number of eggs retained for the twelve females 

 at death was 50 5/12. 



(/) The number of eggs remaining in the body of the un- 

 fertilized females when overtaken by death. 

 Notes derived from observations in four instances. 



The largest number of eggs retained by unfertilized 

 females was B 5, 201. No eggs were retained by B 2 a . 



