No. 145.] 
849 
their outer sides. Wings expand one inch. Occurs the.latter part of June, on weeds 
along the borders of meadows. 
The Cloudy Plume (P. nebuladactylus) is milk white, the fore wings clouded 
with pate tawny brown which color occupies the basal portion and forms two broad 
bands towards the apex, the last one often faint and not perceptible on the inner lobe • 
hind wings and their fringe and under side of both pairs of the same pale tawny 
brown color; abdomen white, sides and stripe on the middle of the back pale tawny 
brown; legs white. Wings expand one inch. The tawny marks on the fore wings 
arc often obscure in old individuals and sometimes wholly obliterated; still the species 
may be discriminated by the pale tawny color of the hind wings and the under sur- 
face of the fore ones contrasting with the whiteness of their upper surface. It is our 
most common species, occurring from the middle of June till the middle of July, ia 
yards around dwellings, frequently entering opened windows in the evening, being 
attracted by the light of the lamps. 
The Freckled Plume (P. navosidactylus). Milk white, the fore wings sprinklted 
with black atoms, which form a black spot at the commencement of the cleft and a 
det half way from this to the base; a tawny brown spot on the outer margin near 
the tip; fringes, under side, hind wings and their fringes ashy brown. Wings expand 
0.90. Appears towards the middle of August, in the same situation as the preceding. 
The Chalky Plume (P. cretidactylus ) is white tinged with tawny yellow, and 
has a small brownish black spot on the fore wings at the cleft and a brown streak on 
the outy margin slightly beyond the black spot, with traces of a brown oblique 
band from the one to the other; legs white, four anterior shanks banded each with 
a broom-like tuft of scales of a pale tawny yellow color at tip and another upon the 
middle. Expands one inch Taken the middle of July, in forests. 
[Assembly, No. 145.] 
54 * 
