42 
PLATE XX 
A continuation of the preceding plate; Figs. 1-5 are ¢’s from Provo, 
Utah, showing a gradual increase in depth of ground color and markings; Fig. 
2 is a fairly typical illepida Grt., whereas Fig. 5 can be referred to submissa 
Sm. Fig. 6 is a ¢ from Durango, Colo., and Fig. 7 a specimen of the same 
sex from Ft. Wingate, N. M., approaching the dark Arizona form; Figs. 8-12 
represent 2’s from Provo, Utah, showing both pale, rather immaculate forms 
(illepida) and dark well marked specimens (diversilineata); Fig. 13 is a 9 
from Glenwood Spgs., and Fig. 14 one from Ft. Wingate, N. M. In S. Colo., 
New Mexico and especially in Arizona diversilineata appears to have developed 
into a good geographical race, at least all our Arizona specimens are constant 
in this respect. In Utah the illepida form predominates, but there are occasional 
specimens of diversilineata found, especially among the ?’s, and these are ap- 
parently diverging into a new form, submissa Sm., which can, however, scarcely 
be considered more than an aberration at present. Resoluta Sm. is nothing but 
a slightly paler illepida; we have a specimen which has been compared with 
the ¢ type in the Nat. Museum. 
