682 



C. B. HAUDENBERG. 



all tlie eggs are laid, the empty female drops out of the l)ag 

 and dies. 



Fertility. — The fecundity of the female bagworm is 

 remarkable. Fuller, in his first account of the Wattle Bag- 

 worm in 1899, gave the number of eggs for one female as 

 1600, while in his later account, in August, 1913, he said: 

 " Some six hundred eggs are laid; the number may be more 

 or less in accord with the size of the female. Actual counts 

 of eggn in 1911 and 1912 ranged from five hundred to seven 

 hundred and fifty per female." 



Our counts of several egg-masses during 1913 and 1914 

 gave the following results : 



From this table it is evident that the fertility of the female 

 varies considerably, ranging from a minimum of 438 in a 

 specimen from the Clan Syndicate plantation to a maximum 

 of 3098 obtained from a female in the Wartburg plantations. 



The Wartburg specimens were collected in a plantation 

 where the infestation was slight, and the bagworms weie thus 

 allowed to develop to their full extent. We see that the 

 range here is from 1544 to 3098, with an average of 2380 

 per female. This is a high average and will only be reached 

 under the most favourable conditions. 



The Greytown specimens were obtained from a block Avhere 

 a sudden heavy infestation had occurred, resulting in complete 

 defoliation of the trees before the bagworms had become 

 full-grown. As a result a certain amount of starvation had 

 taken place, which, while not being sufficiently severe to 



