EASTERN UNITED STATES. 343 



Hind wings with the outer border about the same 

 width, but the costal and inner margin a little broader. 



Under side about the same color as the upper, without 

 spots ; the basal half of the posterior part of the fore 

 wings smoky black, extending as a narrow posterior 

 border along the outer half. 



Female. Dark brown marked with pale yellow. 

 The basal two fifths of the fore wings brown ; beyond 

 this a band of yellow extending half-way to outer mar- 

 gin, and not quite reaching either margin, separated into 

 spots by the veins and venules, making in all ten inter- 

 venular yellow spots, besides the one that fills the outer 

 third of the cell. Hind wings as in the males, but paler, 

 the veins dark. 



Under side almost a lemon-yellow, the black on the 

 fore wings as in the males, with the addition of a border 

 from the posterior angle half-way to the apex, and most 

 of the outline of the cell black. 



The larva, according to Dr. Chapman, feeds upon a 

 large species of grass (Erianthus alopecuroides), rolling 

 itself in a leaf. When full grown it is one inch long, 

 fusiform, bluish white ; collar black, ending in a dot on 

 each side; a lunate black band on joint 13 and anal 

 plate. The surface is thickly dotted with minute black 

 tubercles. Head oval, oblique, white, smooth, slightly 

 bilobed ; a dark band about the top and sides, a black 

 vertical streak on the middle of the face, and a short 

 streak of the same color on each side of this. 



The chrysalis is narrow, greenish white ; the head- 

 case blunt, black-tubercled, and bristly ; the last joint 

 black. 



Massachusetts to Florida, Illinois, Kansas, Montana. 



