SMERINTHUS GEMINATUS 183 



The species is not uncommon, though not as com- 

 mon as excoecatiiSj "from Canada to Virginia, and 

 westward to Iowa," according to Mr. Beutenmiiller. 

 It is considered to be double-brooded, and may be so 

 in more southern places, but ours — in Vermont and 

 Massachusetts — have not emerged before the follow- 

 ing summer, though they have pupated in late June 

 or early July. Those pupating in September and 

 October would naturally pass the winter as pupae. 



