78 THE WHITE MOUNTAINS 



Among the Pierinae, the Clouded Sulphur (Eury- 

 mus philodice) and the Cabbage butterfly (Pieris 

 rapae) are of course abundant enough. I shall 

 be surprised if the Pink Edge (E. interior) does not 

 some day turn up here, having escaped the net only 

 because no one takes so common an insect as its 

 congener, which it resembles too much on the wing 

 to be readily distinguished from it ; and I have 

 taken it above timber. The only interesting form 

 of this group found here is the Gray- veined White 

 (Pieris oleracea). Though nowhere nearly so com- 

 mon as thirty years ago, when I first collected at 

 the mountains, when one might see fifty at a time 

 in an open field, it is not yet quite exterminated by 

 the invading Cabbage butterfly (P. rapae), and in 

 the very first of the season, when a dozen or so may 

 be taken in a day, is as common as that species ; 

 but with the advanced season it appears quite lost 

 among the swarms of the latter. Probably it will 

 always hold out in this, its New England strong- 

 hold. 



None of the swallow-tails are preeminently 

 abundant, with the single exception of the Tiger 

 Swallow-tail (Jasoniades giaucus). But this is 

 indeed an exception. Early in June of any year 

 one may take a dozen or twenty with a. single sweep 



