53 
[ 313 ] 
Imago, or Moth. —Length between seven and eight-tenths ot an inch. Expanse of 
the wings, one inch and six-tenths. Antennae setaceous, brown. Labial palpi, a little 
longer than the head, porrected; basal joint black above, with long white scales be¬ 
neath ; second joint white beneath at base, gray at tip, with a broad, oblique black band 
across the middle; third joint very small, gray. Maxillary palpi obsolete, appearing 
only as a minute pencil of white hairs. Proboscis quarter of an inch long, pale brown¬ 
ish; face dark gray, with a small but distinct white spot in center; thorax pale gray 01 
cinereous, collar and tegulae distinctly dotted with black; abdomen cinereous, indis¬ 
tinctly sprinkled with black points, most obvious near the tip; fore-wings varied with 
black or brownish black and white. The blackish portion presents, under the lens, and 
in the fresh specimen a tint of dark metallic green, which seems to be nearly or quite 
lost in the dried specimen. The coloration of the wing is somewhat equally divided be¬ 
tween the white and the dark portions. Regarding the white as the ground color, the 
black portion may be described as follows: a broad, diffused, irregular vitta or longitu¬ 
dinal band extends the whole length of the wing, nearer the posterior than the costal 
margin. From the middle of this stripe, a broad, imperfect band extends across to the 
costa. There are three series of blackish spots across the end of the wing, two of which 
are approximate, and sub-terminal; the other, further inwards, less perfect, but present¬ 
ing in its middle a larger, somewhat triangular blackish spot; the costal margin is 
divided into alternate portions of black and white. At the posterior basal angle of the 
wing is a pale, but distinct oblong buff-colored spot. Posterior wings cinereous brown, 
with_a central lunule, a middle, transverse line, and the terminal border of a deeper 
color; their under side whitish, with the same lunules and lines and a series of terminal 
brown points, very distinct; legs black, annulated with white. 
The characters of the posterior wings are here copied almost verbatim from Guenc6, 
and serve more distinctly than any other part of his description to identify the species 
with the superans. 
If this should prove to be a distinct and undescribed species, I propose for it the 
name of Acronycta prunivora. 
I 
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