LEPIDOPTERA 



761 



The species is dimorphic; the dimorphism affects both sexes and 

 is independent, so far as is known, of season, as there is onh' one 

 brood each year. It is the typical form Chlorippeclyton dyton that 

 is figured here. The socond form, Chlorippe dyton proserpina, differs 

 in having the hind wings darker and the submarginal row of eyelike 

 spots wanting. 



The larva (Fig. 970, b) feeds on hackberry. 



The gray emperor, Chlonppe celtis. — In this species the wings are 

 russety brown marked with blackish brown. In addition to the sub- 

 marginal row of six eye-like spots on the hind wings, there is one in 

 cell Cui of the fore wings. 



The larva of this species also feeds on hackberry. 



VI. THE AN^AS 



The butterflies of the genus Ancea are quite distinct from any of 

 the preceding divisions of the N>Tiiphalin«, although they have been 

 classed with the em- 

 perors. There are 

 three species found 

 in theUnited States, 

 A . pdrtia from Flor- 

 ida, A. morrisonii 

 from Arizona, and 

 the following one. 



The goat-weed 

 butterfly, Ancea an- 

 dria. — The female 

 of this species can 

 be easily recognized 

 by Figure 971. The 

 male is smaller, 

 with wings of a rich 



dark orange, margined with brown, and without the light-colored band 

 characteristic of the female. This species is found in the Mississippi 

 Valley from Illinois to Texas. 



Fig. 971. — Anaa andria. 



Subfamily SATYRIN^ 



The Meadow-browns 



This subfamily includes chiefly brown butterflies whose markings 

 consist almost entirely of eyelike spots. Some western species, how- 

 ever, are bright-colored. In our species some of the veins of the fore 

 wings are greatly swollen at the base (Fig. 972). This character is 

 not quite distinctive; for in some species of the Nymphalinaj that are 

 found in southern Florida and in Texas near the Mexican border some 

 of the veins of the fore wings are swollen at the base. 



The larvEe are cylindrical, tapering more or less towards each end. 

 The caudal segment is bifurcated, a character that distinguishes 



