ENTOMOLOGICAL NEWS. 



[Jan., '04 



Standards of the Number of Eggs Laid by Insects. II. 



Being average obtained by actual count from the combined eggs of twenty 



(20) depositions or masses. 



BY A. ARSENE GIRAULT. 



Standards, of course, are absurd ; there are none in such 

 cases as this. The following are offered to serve as general 

 averages of the number of eggs laid normally, and to fix a more 

 or less definite range. Time is saved. 



The idea of compiling these was suggested by the fact that 

 the estimates and ratings of authors founded on one or two 

 counts, and too frequently being but estimates in the true sense 

 of the word differed so widely as to cause a little confusion. 



A few examples given below will illustrate. Only two 

 insects are included in this installment ; more are to follow 

 whenever the conditions are such as to make it practicable : 

 (i.) eggs in definite masses ; (2) eggs in sufficient quantities. 



The first of this series was published in the ENTOMOLOGICAL 

 NEWS, 1901, p. 305. 



2.* CLISIOCAMPA AMERICANA. 



* For the first of these series, see ENT. NEWS, ubi su/>ni. 



