366 AMERICAN LEPIDOPTERA. 



t. p. line extending in a straight line from costa to inner margin and 

 vaguely across the secondaries as well. 



Parallela is the larger, redder form, with the median lines con- 

 spicuously pale, the reniform wanting, and the s. t. line scarcely 

 traceable. 



Immaculalis, of which ohliqualis is a synonym, is small, more 

 yellowish-gray, powdery, with the median lines much less con- 

 spicuous, the t, a. tending quite markedly to be only half length, 

 while the linear reniform is always at least traceable. There is an 

 obscure s. t. line which varies greatly in the specimens, but is usually 

 traceable, 



Panitalis stands alone in this series by its large size, powdery, 

 luteous red-brown color and general resemblance to geometralis. It 

 is the only species here in which the median shade is obvious or 

 even traceable on primaries, and the t. p. line is subangulate on vein 

 7. The presence of a punctiform orbicular is another point of 

 resemblance to the preceding and different from all the following 

 species. 



Rectalis stands alone among the smaller species by its almost 

 obsolescent reniform, very even median lines which are not incepted 

 by black or dark costal spots, and the general almost uniform pale 

 leather- brown color. 



All the rest of the species have the reniform well marked or even 

 conspicuous, and the median lines more or less obviously incepted by 

 costal black or dark spots. 



Secundalis and finitima have the surface of the primaries obviously 

 powdery, the reniform while distinct is not contrasting, and the s. t. 

 line is continuous, preceded by a more or less obvious darker shading. 



Secundalis is the larger, more coarsely powdered species, dull gray 

 in color, the median lines diffuse and the veins outwardly dark 

 marked so as to be defined against the ground. 



Finitima is smaller, much more variable in ground, ranging from 

 light ashen gray to vellowish and rusty reddish, the median lines not 

 diffuse and the veins not relieved against the ground color anywhere 

 in the wing. The powdering of the primaries, while obvious as 

 compared with the following species is much finer and more even 

 than in secundalis. 



Of the remaining species, subfiavidalis resembles finitima, except 

 in the lack of surface powdering and in the cleaner cut ornameuta- 



