THE TRIBE OF THE EMPERORS 207 



surface of wings black with a distinct white band in bow- 

 like form running across the middle of both wings. A row 

 of six tawny spots just outside the white band on each hind 

 wing and various sub-marginal blue spots outside of these. 

 Under surface tawny brown with the white stripe dis- 

 tinct and many red-brown spots. 



Red-spotted Purple {Basilarchia astyanax or Limenitis 

 astyanax). Expanse 2^ inches. Ground color brownish 

 black tinged with bluish, especially on the hind wings. 

 No white band but various red and blue spots, especially 

 near the outer margins of the upper surface of both pairs 

 of wings. 



Viceroy {Basilarchia archippus or Limenitis disippus). 

 Expanse 2§ inches. General color reddish brown with 

 veins and margins blackish. A narrow black band run- 

 ning across the hind wings just beyond the middle. A 

 series of white spots in all the marginal bands. 



Vicereine {Basilarchia floridensis). Expanse 2| inches. 

 Similar to the Viceroy but much darker in the brown 

 coloring of all the wings, 



THE TRIBE OF THE EMPERORS 



The members of this small group are distinguished from 

 the closely related Sovereigns by the tailed hind wings 

 in one species, by the eye-spots on the upper surface of 

 the wings of the others, and by the fact that on the club 

 of the antennae there are three instead of four longitu- 

 dinal ridges. There is also a distinction in the arrange- 

 ment of the veins of the hind wings. {See plate, page 209.) 



This tribe is represented in our northern fauna by only 

 two genera. In the genus Chlorippe the antennae are as 

 long as the front wings are wide. In the genus Anoea the 



