106 BUTTERFLIES 



to pass around its back. It now entangles its hind feet 

 in the bit of silk and soon casts off its last caterpillar skin, 

 emerging as a curious looking chrysalis about three 

 quarters of an inch long with a remarkable pointed pro- 

 jection on the front of the head. When seen through a 

 hand lens this pointed projection and the well-developed 

 characteristic wing sheaths give the chrysalis a remarkable 

 resemblance to some of the twig hoppers or Membracids. 

 The colors vary considerably with the surroundings but 

 are commonly toned in various shades of green and yellow 

 brown. 



A little later each chrysalis breaks open to disclose one 

 of the beautiful butterflies. 



The conditions under which this butterfly lives at the 

 limit of its northern range are not well determined. It is 

 probable that many of those seen here have flown from 

 considerably farther south, and that these migrants lay 

 eggs from which a brood of butterflies develops, these 

 native born appearing late in summer. Presumably the 

 latter hibernate, but whether they can do this successfully 

 under the rigorous conditions of our northern winters has 

 never been determined. In fact, Scudder wrote some years 

 ago that no caterpillars had ever been found in New Eng- 

 land. Here is an interesting opportunity for some young 

 observer to make a real contribution to science. 



The Little Sulphur 



Eurema lisa 



Were one to imagine a Clouded Sulphur butterfly re- 

 duced to half its usual size and built with a corresponding 



