THE IMAGO. 



337 



grayish brown, inclining to mouse color in some specimens. 

 The under side of the entire body, legs and palpi is some- 

 what lighter than the under side of the wings. 



The markings on the fore wings are dark brown, and are 

 as follows : the half line starts from the costa, near the base 

 of the wing, and extends half way across the wing. The 

 transverse anterior line arises from the basal fourth of the 

 costa and crosses the wing as a scalloped line. Just outside 

 of this line, on the cell, is the small orbicular spot. The 

 reniform spot is crescent shaped, and, resting on the outer 

 end of the cell, extends across its entire width. The median 

 shade is quite obscure, but is bent out around the end of the 

 cell, and toothed along the outside. The transverse poste- 

 rior line arises from the outer fourth of the costa, is some- 

 what curved and toothed on the veins, and terminates just 

 within the anal angle. The subterminal line, a Kttle outside, 

 is similar to the transverse posterior line and parallel with 

 it. The terminal space is usually somewhat darker than the 

 rest of the wing, and all the cross lines are heavier on the 

 costa than elsewhere. The fringe is cut with dark brown 

 between the veins. 



The hind wings have a faint discal lunule at the end of the 

 cell, and the terminal shade is darker brown than the rest of 

 the wing. The upper side of the abdomen is of the same 

 color as the upper side of the hind wings, and has a row of 

 brownish spots along the middle. 



The outside of the third and fourth joints of the tarsi and 

 the ends of the femora on the upper side are brown ; the fore 

 and middle tibiae are pale mouse colored on the outside. 



The females (Plate I, Fig. 1) measure from 37 to 62 mm. 

 (one and one-half to two and one-half inches) between the 

 tips of the expanded wings. The entire body and wings 

 above and beneath are yellowish white, except the abdomen 

 beneath and towards the end above, which is pale yellow. 

 The markings of the fore wings are dark brown or nearly 

 black, but vary much in intensity in different specimens, 

 being almost entirely obliterated in some examples. The 

 half line at the base of the wing, the orbicular and reniform 

 spots, the costal end of the transverse lines and the black 

 spots in the cilia are quite pronounced. The form and 



