HOW TO KNOW THE BUTTERFLIES 



tawny and with tawny spots. In the male the upper surface 

 of the fore wings bears a brand which consists of two velvety 

 black patches separated by a patch of large scales of a lighter 

 color ; the dark outer border of the wing extends to the brand 

 except that there is a yellow spot in cell M 3 and Cvt^ ; be- 

 tween the brand and the costal margin of the wing there is a 

 more or less distinct band of yellow which extends from the 

 base of the wing nearly to the subapical row of spots ; the 

 central portion of the hind wings is tinged with yellow but 

 without well-defined spots. In the female the yellow border 

 along the costal margin of the wings is much less distinct. 



The lower surface of the wings in both sexes is yellowish 

 brown ; on the fore wings there is a dark shade parallel with 

 the inner margin and covering nearly half of the wing ; and 

 the yellow markings of the upper surface are faintly indicated. 

 Expanse of wings one and one-fifth to one and one-fourth 

 inches. 



(2) The Dark Form, Thymelicus otlw egeremet (e-ger'e- 

 met). — This form is represented by both sexes. The upper 

 surface of the wings is a blackish brown with almost no 

 tawny shading, there are, however, long greenish-yellow hairs 

 near the base of the inner margin of the fore wings, and over 

 a large portion of the hind wings ; the transverse row of spots 

 beyond the middle of the fore wings is present but is abbrevi- 

 ated, lacking the spot at each end of the row. 



The species is found throughout the eastern 

 United States ; the larva feeds on grasses. Otho 

 is a Roman surname. 



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