73 
brown shade at the middle, from the base to the transverse anterior line. Discal 
mark elongate, upright, curved inwardly, black, outlined, and with a few white 
scales. Transverse anterior line vertical, black, with three outward curves. 
Transverse posterior line, strongly curved outwardly around the discal mark, 
bending inwardly at about the middle, thence almost straight to the inner margin. 
A little above the inner angle is a distinct white spot. Line at base of fringes 
black, with two short teeth inwardly above the angle. Hind wings uniformly 
smoky brown. Fringes concolorous. Forewings beneath almost uniform smoky 
brown, paler along inner margin, and with a faint indication of a dark trans- 
verse shade. Hind wings beneath smoky brown with a darker discal mark and 
median shade. Head and thorax smoky brown, the latter slightly lighter brown 
anteriorly. Abdomen paler than the thorax with two bunches of metallic brown 
hairs on the anterior segments, and a similar bunch on the disc of the thorax. 
Antennae smoky brown. Expanse 32 mm. 
9. Fore wings deep sepia brown, basal region at costa and inner margin 
somewhat smoky brown. Middle part sepia brown with a smoky brown shade. 
Outer part dark brown. Transverse lines distinct, black, similar to those of the 
male. Discal mark filled with clear white, and marked with this color on the 
outer and inner parts. Marginal line black, marked with a little white inwardly, 
especially near the anal angle. Apex slightly tipped with lighter brown, with 
an indistinct double-toothed shade beneath it. White spot near anal angle a little 
larger than in the male. Hind wings uniform smoky brown. Underside wholly 
smoky brown, with slight indications of a darker median shade on each wing. 
Head, thorax, and abdomen same as the male. Expanse 36 mm. 
Larva. Head jet black, shining. Body black; brown on the back of the 
8th to 12th segments with a short, cylindrical, cherry red protuberance on the 
oth and 10th segments. Hairs on the sides of the body brown and black, with a 
black, plumose hair on each tuft. Bunches of hairs on the 4th to 7th segments 
inclusive, deep black, with short white, plumose hairs on each bunch at the 
sides. Hairs on the warts short, white or yellow, plumose. Warts on the Ist 
to 3rd segments inclusive, brown; on each side brown. On each side of the Ist 
segment is a long black pencil directed forward and a similar one on the 11th 
segment directed backward. Underside and legs brown. Length, 40 mm. 
Food-plants. Balsam fir (Abies frazeri) and black spruce (Abies mariana). 
Cocoon. Oblong, oval; composed of silk mixed with the hairs of the larva. 
Length 18-20 mm., width 8-9 mm. 
Type Loc. Summit of the Black Mountains, North Carolina, altitude about 
6000 to 6715 feet. 
Five immature larvae of this interesting species were collected on June 7. 
Two of these matured and spun cocoons on June 29, and pupated June 3o. 
On July 8 a female and on July 11 a male emerged. Two larvae were preserved 
in alcohol, and the remaining one escaped.” Beutenmuller. 
We only know this form from photographs of the types. 
