150 BUTTERFLIES 



der rather than stout. On the lower surface of the wings 

 there is a narrow yellowish marginal line. 



Pearl Crescent {Phyciodes tharos or Melitaea iharos). 

 Expanse If inches. General color much lighter than 

 either of the preceding. Terminal joint of each palpus 

 less than a third as long as the middle joint. 



THE TRIBE OF THE ANGLE-WINGS 



The special characteristic that distinguishes the mem- 

 bers of this important group from the other Nymphs is 

 the fact that on that portion of the club of each antenna 

 which has not hairs there are three longitudinal ridges. 

 The tribe includes a large number of our most familiar 

 butterflies. Nearly all of them are rather large, with 

 bright attractive colors. They fly freely along roadsides 

 and in orchards, fields, and meadows so they are com- 

 monly seen by every one. 



The Violet-tip 



Polygonia interrogationis 



The Violet-tip is one of the largest of the Angle- wings, as 

 well as one of the most beautiful of all our species. It has 

 a wonderful violet iridescence which is especially marked 

 on the projecting tip of the hind wing. On fresh specimens, 

 however, it may be seen practically all over both surfaces 

 of the wings and in bright sunlight gives them a sheen 

 of remarkable beauty. The expanded wings measure 

 nearly two and a half inches, the upper surface being 



