Vol. xxiv] 



ENTOMOLOGICAL NEWS. 



15 



males and five females which passed through four molts, of 

 five males and five females which passed through five molts, 

 and of one female which molted six times, is copied from a 

 previous paper ( i ) . 



Five specimens of Diapheromera femorata were reared at a 

 high but not constant temperature. In this experiment, the 

 walking-sticks were bred above a paraffine oven, the temper- 

 ature in this region varying between 25 and 35 degrees C. 

 The following table shows the interval, in days, between molts 

 and the total duration of the stadia. 



TABLE II. 



STAGES IN DAYS BETWEEN MOLTS OF DIAPHEROMERA FEMORATA 

 REARED UNDER A HIGH TEMPERATURE OF 25° TO 35° C. 



A glance at the averages of the post-embryonic develop- 

 ments in the following table shows that the male walking- 

 sticks which passed through four molts under nearly norma^ 

 conditions required about the same amount of time (40.6 

 days) as the male specimens which molted five times under a 

 high temperature (40.5 days). Practically the same results 

 were obtained with the male and female Phasmids which pass- 

 ed through five molts under nearly normal conditions, and six 

 molts under a high temperature (Table III). If the averages 

 of corresponding stadia of the male individuals which molted 

 four and five times under a nearly normal and a high tem- 



