69 
irregularly dentate whitish s. t. line; terminal space evenly olivaceous with a 
dark irregular terminal line; fringes checkered, brown. Secondaries deep smoky 
brown with lighter fringes and traces of discal spot and postmedian line. Ex- 
panse 35 mm. 
Larva. 
“Mouse gray, feathered and soft. Body dark slate, almost black, velvety, 
stigmatal region light yellowish gray. Dorsal tufts on 4th, 5th, 6th, 7th and 
11th segments dark, those on 4th and 11th being almost black. A pair of long 
black lateral hair-pencils on Ist segment and a few single black hairs from anal 
segment. Suprastigmatal warts on segment 1 without feathery hair; all other 
warts with bushy, rounded tufts of feathery hair. Eversible glands on oth 
and 1oth segments amber-colored. Spiracles whitish; legs whitish, rather hairy. 
Pupa. 
Light brown, wing cases and stigmata dark brown; thoracic region, segment 
joints and cremaster are brown. All the warts, even the pedal line, seem to be 
retained on the abdominal segments as minutely granulated patches, covered with 
short hair. The six dorsal warts on 5th, 6th and 7th segments are represented 
by 6 rosette-shaped, lichen-like formations of yellowish-gray color, the two 
warts on each segment almost confluent with an oval patch. The chitin cover 
is very fragile.” Seifert. 
(a) O. aTomaRIA forma PARALELLA G. & R. (PI. IV, Figs. 7-9, VI 
figs. 3, 4). 
Parorgyia parallela Grote & Robinson, Proc. Ent. Soc. Phil. VI, 5, Pl. I, fig. 5 
(1866) ; Lintner, Entom. Contr. III, 129 (1874) (larva). Seifert, Ent. 
Amer. III, 93 (1887) (life history). 
Parorgyia achatina Dyar (nec A. & S.) Psyche VII, 136 (1804). 
Olene achatina Neumoegen & Dyar (nec A. & S.) Jour. N. Y. Ent. Soc. II, 57 
(1894) ; Beutenmuller, Bull. Am. Mus. N. Hist. X, 384, Pl. XVII, fig. 18 
(1898) ; Dyar, Bull. 52, U. S. Nat. Mus. 260 (1902); Holland, Moth 
Book, Pl. XXXVIII, fig. 9 (1903). 
Grote & Robinson’s description of the ? is very full and accurate; 
specimens vary in the amount of brown suffusion in the lower portion 
of median area; the black shading on the veins may be present or ab- 
sent. The ¢ is similar to that of atomaria Wlk. with the addition of 
the basal black dash. 
“9. Anterior wings pale olivaceous-cinereous, much clouded with brown 
and sparsely sprinkled with black scales. Basally the costal half of the wing is 
olivaceous cinereous; the median nervure is covered narrowly along its length 
with black scales which are prolonged along the fourth m. nervule. Below, a 
broader black longitudinal stripe runs from the base of the wing to beyond the 
t. p. line along the sub-median fold, and is connected with the dark scales along 
the median nervure by an oblique black line (appearing as if covering a vein) 
at about its middle. This is part of the inner median line which is dentate and 
much as in P. Clintonii but less distinct. The inner median line is preceded by 
