Vol. xxiii] 



ENTOMOLOGICAL N\YS. 



355 



Standards of the Number of Eggs laid by Insects X. ;: 



Being Averages Obtained by Actual Count of the Combined Eggs 

 from Twenty (20) Depositions or Masses. 



By A. A. GIRAULT, Brisbane, Queensland, Australia. 

 14. LOCUSTA DANICA Linnaeus. 



The egg masses upon which these counts are based were 

 obtained within a square yard of made soil along the Mulgrave 

 Tramway (connecting Cairns with Babinda) just across the 

 Mulgrave River from Nelson (Cairns District), North Queens- 

 land, Australia. It is tolerably certain in this case, that each 

 mass represents the total depositions of a single female, since 

 the deposition of one mass, apparently, always results in her 

 death, seemingly, she being unable to withdraw her greatly 

 stretched abdomen, which after death breaks off at the fourth 

 abdominal segment, or else is twisted off by the struggles of 

 the female. In two cases, 96 and 115 eggs were counted, but 



*For the first nine 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; 1909, 

 PP. 355-357; 19". PP- 14-15- 



