192 BUTTERFLIES 



milberti). Expanse 1| inches. One of the smallest of th© 

 Angle- wings. Easily known by its small size and the 

 broad orange band extending across the upper surface of all 

 the wings just beyond the middle. Under surface dark 

 mottled gray without distinct white markings. 



Compton Tortoise {Eugonia j-albuvi, Vanessa j-album or 

 Grapta j-album) . Expanse 3 inches. Best known by the 

 straight line of the inner margin of the front wings and the 

 white j on the under side of each hind wing. 



The Buckeye {Junonia coenia or Vanessa coenia). Ex- 

 panse If inches. Distinguished by the large eye-spots on 

 the upper surface of the wings, one on each front and two 

 on each hind wing. Eyes not hairy. 



THE TRIBE OF THE SOVEREIGNS 



No other small group of American butterflies has at- 

 tracted so much attention as the species of the genus 

 Basilarchia, which have been happily called the tribe of 

 Sovereigns. These are rather large butterflies with 

 rounded wings wliich are found in one species or another 

 Dver practically the whole of North America. Some of 

 them are of exceeding beauty and all of them present life- 

 histories of extraordinary interest. At least two of the 

 si>ecies are the most notable examples of the mimicry of 

 other butterflies that are shown in our fauna. They also 

 present some extremely interesting problems for the study 

 of natural hybrids and they illustrate in their development 

 some of the most wonderful cases of adaptation to en- 

 vironment that have ever been found. 



These butterflies may be considered from so many in- 



