28 



Egg-lrtymg records of several species of ladybirds — Continued. 



A pair of Adalia hiprmctata var. humeralis (see column 3) was placed 

 in a jar with food April 13, and eggs were deposited on April 20 and 

 23. On Ma}" 3 the female was isolated, but continued to deposit eggs 

 for three weeks. The eggs, 105 in number, laid from that date until 

 May 20, hatched, but 18 laid subsequent to the 20th did not hatch. In 

 this case the female continued to lay fertile eggs for sixteen days after 

 being isolated. 



Several species of ladybirds were reared, and the immber of days 

 spent in each stage is given ])elow. In cases where more than one 

 individual of a species was reared the average number of days spent 

 in each stage is given in the table. 



Number of days spent in different stages of development by several species of ladybirds. 



Si)ccies. 



Adalia bipunctata 



Adalia bipunctata var. humeralis 



Anatis /.'i-punctata 



Childciirns bivulnerus 



Mysia pullata 



(;(icciiit'lla sauKuinea 



CocrilU'lhl .'Mlotata 



Coccinella trilasciata 



Adult to 

 adult. 



