1916 



ENTOMOLOGICAL SOCIETY, 



125 



far, and doubtless a direct result of the unusual earliness of the past season, the 

 previous year's (1914) date being about two weeks later. 



When about to moult for the last time the pupae crawl out of the gall 

 chambers, and settle on a needle, the head facing the point of the needle. The 

 puj)a is reddish in colour with an outer coat of wax. 'J'his outer covering begins to 

 split from the head down tlie middle ul' the back, the complete operation of moult- 

 ing lasting some ten minutes. When the moult is completed the cast skin, a 

 ghostly replica of its former occupant, is left hanging to the needle. 



j^ "**' 



Ll',:.:1s cf v.ax glands, var. co'.re.'.i. 



Winged migrant to Douglas fir. 



