iS6 



Annals Entomological Society of America [Vol. I, 



The paper mainly deals, however, with observations on the 

 adult, and especially on the number of generations per season 

 and related points concerned with the function of reproduction, 

 and the interpretation of these observations in the light of the 

 recent work of Tower (1906). I have, therefore, freely inter- 

 spersed cjuotations from this work, and discussed somewhat at 

 length the evidence so far presented in regard to the number of 

 cycles per season, reaching the general conclusion that my 

 observations are indeterminate in value as far as this point is 

 concerned, mainly because of paucity; that they tend, however, 

 to throw the question open again, especially as Tower gives but 

 a limited amount of evidence, and that the question is entirely 

 undecided as far as out-door conditions are concerned. I have 

 seen no valid reason to doubt Tower's statements, excepting that 

 the data back of them have been withheld, and that unfortunate 

 discrepancies arise from place to place throughout. 



* These refer to the hibernated pairs unless otherwise stated; and unless noted, all of these eggs 

 are from pair No. 2 of the liibernated individuals, 

 t Approximated. 



