OF NORTH AMERICA. 151 



C. subjecta. It is far from safe to presume, that because we find in a 

 locality far distant from that which we know to be the original home 

 of a species, specimens differing slightly from the original type, that 

 these specimens are specifically distinct ; for among the insects referred 

 to as received from Mr. Belfrage, are specimens of E. niendica and 

 Arctia arge which cannot be separated from those found in New Eng- 

 land. This question of geographical distribution has been a stum- 

 bling block with many Entomologists, and it may not be out of place 

 to remark that many species have a much wider geographical range 

 than has hitherto been awarded to them. 



