Vol. xxii] 



ENTOMOLOGICAL NEWS. 



461 



Standards of the Number of Eggs laid by Spiders. — I. 



(Arach.). 



Being Averages Obtained by Actual Count of the Combined Eggs 

 from Twenty Depositions or Masses. 



By A. A. GiRAULT, Brisbane, Queensland, Australia. 



All of the egg masses of this spider were collected at one 

 time from the sides of windows and beneath the sills, from the 

 under sides of piles of lumber stacked up on the ground, from, 

 the sides of wooden structures under projections of all kinds 

 and from other similar situations in a limited area on the west- 

 ern shore of Lake Michigan occupied by an experimental sew- 

 age pumping station. Sanitary District of Chicago. Chicago. Il- 

 linois. The collection was made during the afternoon of July 

 22, 1911. 



The spider was extremely abundant in this situation, espe- 

 cially along the elevated boardwalks and platforms leading to 

 and from the several experimental sewage filters back of the 



