4 BULLETIN 599, U. S. DEPARTMENT OF AGRICULTURE. 
DESCRIPTION. 
THE ADULT. 
(PI. Ill, fig. 3.) 
Because of its completeness the description of the adult is copied 
from Murtfeldt: 
Antennae dark fuscous, indistinctly pectinate and banded on the under side 
with pale buff. Palpi long, exceeding the vertex. Basal joint short, pale ; sec- 
ond joint one-third longer than apical. Brush quite dense, distinctly divided, 
dark fuscous overlaid with cream-coloured scales, palest on inner side. Apical 
joint dark, very slender, with extreme tip cream white, most conspicuously so in 
$. Tongue long, sparsely scaled. Vertex dark brown. Face cream white. 
Thorax and tegulae purplish-brown. Fore wiDgs almost black, with rich purplish 
gloss, and sparsely sprinkled with white scales. On the costa back of the apex 
is a small, irregularly triangular, cream white spot, and a few scattered scales 
of the same colour form an obscure outer border. In the cell near its upper mar- 
gin are two somewhat indefinite, cream-coloured dots in line, with a third one 
below and slightly back of the one nearest the base. Cilia fuscous, shading 
outward to gray. Lower wings shining silky, cinereous, almost silvery. Abdo- 
men pale brown, terminal segment banded with buff at posterior margin. Lat- 
eral tufts buff, inconspicuous; anal tuft reddish-brown. Under surface spec- 
kled with brown and cream. Legs brown, annulate with cream white at the 
joints and middle of the tibiae. Alar expanse from 16 to 17 mm. 
THE EGG. 
(PI. II, fig. 3.) 
The egg is bluntly elliptical, somewhat flattened at the smaller 
attached end ; length, 0.57 mm. ; greatest width. 0.42 mm. The color 
is clear white when newly deposited, changing within 24 hours to a 
creamy yellow, the surface smooth and shiny without markings. 
About 24 hours before hatching the eggs change to a pearl gray color. 
THE LARVA. 
(PL II, fig. 1.) 
The newly hatched larva is about 1.5 mm. in length and is yellow- 
ish white in color, with head and thoracic shield fuscous. The reddish 
brown stripes are discernible after about 9 days and as they develop 
they give color to the larva. A detailed description of the full-grown 
larva is copied from Pettit : 
The larva, when full grown, is three-eighths of an inch in length and quite 
slender. Its color is dirty yellowish-white with back and sides marked by 
six reddish-brown longitudinal stripes all of which extend the entire length 
from the thoracic shield to the caudal extremity except the pair on the 
dorsum which unite on the last segment and terminate there. Last segment 
bordered caudally with fuscous and base of anal pro-legs colored the same. 
Venter marked along the middle with a stripe like those on dorsum and sides, 
