AMERICAN LEPIDOPTERA. 9 



iires on Plates I and II should be referred to for the differences 

 between the species liere. 



Holocinerea is decidedly deeper, more bluish gray, the ordinary 

 spots being relieved, the reniform often with a faint reddish or 

 brownish tinge. The streakings are evident throughout the prima- 

 ries, and there is an obvious series of smoky or blackish spots pre- 

 ceding the s. t. line. There is no case where any doubt has arisen 

 as between this and the preceding species. 



Georgii is a little paler gray, less strigate than holocinerea, 

 darker, better marked and with a more obvious s. t. shading than 

 in emargiiiata. The median lines are better marked than in either 

 of the preceding, and as a whole the size averages a little smaller 

 than its allies. The two last mentioned species are much more 

 closely allied than either is to' emarginata and I hesitated as to their 

 distinctness. There is, however, a certain habital difference which 

 will, I feel convinced, justify the species when both forms have been 

 studied in large series. 



Puella is a bright species in which the maculation is neatly de- 

 fined on a very pale ashen ground. The median lines and the 

 median shade cross the wing, and the ordinary spots are completely 

 defined by narrow black lines. All the specimens before me are 

 females, but the superficial characters are, in this case, sufficient to 

 place the species beyond all reasonable doubt. 



Oregonensis is a near ally, but is smaller and the maculation is 

 not nearly so well defined. The t. a. line is complete, but neither t. 

 p. line nor median shade get much below the costa, while the basal 

 space above the black streak is paler and the reniform has a slight 

 reddish shade. The harpes of the male resemble those of latici- 

 nerea, but both angles of the tip are extended, the lower not nearly 

 so much as the upper. 



Winnipeg and unimoda are very obscurely marked forms which 

 may become troublesome. Both are rather dull ashen grsiy, unimoda 

 being the paler of the two. The black line at the base is often very 

 obscure, so that it would seem almost referable to the series in which 

 that distinction is wanting, but the orbicular is here well defined 

 and there is no tendency to the strigate or denticulate type of macu- 

 lation. Other specimens have the basal space above, a little paler, 

 and in such cases resemble the antennata group very closely, but 

 they are more evenly colored, the median shade is scarcely marked 

 and the reniform is very imperfectly defined. 



TRANS. AM. ENT. SOC, XXVII. (2) AUGUST, 1900. 



