GREEN, 0HE8TNUT-BA0KED PLUM CATTEBILLAE. 5S 



Imago, or Moth. — Length between seven and eight-tenths of an inch. Expanse of 

 the wings, one inch and six-tenths. Antenn;c 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 or 

 cinereous, collar and tegulte 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 descril^ed 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 Guence, 

 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 undcscribed species, I propose for it the 

 name of Acroni/da prunivora. 



