26 



STEFAN KOPEC. 



experiments with the parental generation, by the weight of new- 

 formed chrysalids. As pupation w r as checked once a day it ought 

 to be emphasised that during the first 24 hours the chrysalid did 

 not lose more than 0.15 to 0.28 per cent, of the original weight 

 of the chrysalid immediately after its emergence from the larval 

 skin. If we take into consideration the appertaining strict bio- 

 metrical data of Tables III. and IV., as well as the rati 



10 



'Dill'. 



we may ascertain that the weight of the chrysalids underwent no 



TABLE III. 



DATA REFERRING TO THE DURATION OF LARVAL AND PUPAL LIFE AND TO THE 



WEIGHT OF CHRYSALIDS. 



A average; EA probable error of the average; a standard deviation; n 

 number of specimens. 



