1918] 



CrambincB of North America 



55 



Table I. 



LENGTH IN DAYS OF INSTARS AND STAGES. 



The normal number of instars for the larvae of this species 

 is probably seven for the hiales and eight for the females, 

 though some individuals in each of the reared series exceeded 

 this number. One even reached the twelfth instar. Table II 

 gives the larval measurements for the various instars. 



Table II. 



LARVAL MEASUREMENTS IN MILLIMETERS. 



Table III shows the sex and the instar at pupation of nine 

 of the moths reared. 



