Oct., '09] ENTOMOLOGICAL NEWS 355 



Standards of the number of eggs laid by Insects VIII. :;: 



Being averages obtained by actual count of the combined eggs from twenty (20) depo- 

 sitions or masses. 



BY A. ARSENE GIRAULT. 



9. CHIONASPIS AMERICANA Johnson. 



The egg masses of this species were collected from eleven 

 trees on the campus of the University of Illinois, Urbana, Illi- 

 nois ; the eggs were those of the winter generation. Willis 

 Grant Johnson under the original description of this insect in 

 1896 (Bull. Illinois State Laboratory of Nataral History, 

 Springfield, 1898, iv (1892-1897), p. 392), states that the 

 average number of eggs is 105. In Iowa, Wilmon Newell 

 (Bull. No. 43, Iowa Agric. Exper. Station, Ames, p. 153) in 

 1899 gives the number as being between 4090 eggs. No data 

 are given by either. 



* For the first seven of this series, see ENT. NEWS, 1901, p. 305 ; 1904, pp. 2-3 ; 1905, p. 

 167 ; 1906, p. 6 ; 1907, p. 89 ; 1908, pp. 4, 383. 



