110 
MEMOIRS OF THE ^S^ATIOXAL ACADEMY OF SCIENCES. 
ventral greenisli yellow line. Thoracic legs black, greenish at the base; abdominal legs black on 
the outside, but greenisli yellow at base within and on the plantie. The body is dusted quite 
densely with long and abundant pale whitish gray hairs, those of the thoracic and eighth and 
ninth abdominal segments much longer than the others; the short dorsal hairs on the second and 
third thoracic and fourth to eighth abdominal segments forming tufts meeting over the middle 
of the back, while the lateral hairs are grouped in tufts which are directed downward. 
Pupa . — The following descriiition is that of the inipa of the Olympia, Wash., larva, $ ; 
Head a little less prominent than in pupa of Z>. angtisii, not distinctly notched, and the ridges 
much less distinct. Body elongated, not very plump, suddenly pointed at the end, and bearing 
a large, broad cremaster ending in four spines, the tM'o inner ones the longer, and with a small 
lateral spine at base. Surface of the body and abdomen coarsely punctured. Length,- 20 mm. 
Datana angusii Grote and Kobiiison. 
(PI. II, lig. 1, fig. 2, 9.) 
Daiana anffusii Grote and Rob., Proc. Ent. Soc. Phil., vi, p. 9, 1866, pi. 2, fig. 1. 
Grote, New Check List N. Amer. Moths, i). 18, 1882. 
Smith, List Lep. llor. Amer., j». 30, 1891. 
Kirby, Syu, Cat. Lep. Het. lir. Mus., i, p. 613, 1892. 
Neum. and Dyar, Traus, Amer. Eut. Soe., xxi, p. 197, 1894; Journ. N. Y. Ent., Soc. ii, p. 116, 
Sept., 1894. 
Laiwa. 
(PI. X, lig. 2.) 
Grote and Hohinsonj Proc. Ent. Soc. Phil., vi, p. 10, 1866. (Last larval stage.) 
BentoimUUer, Can. Ent., xx, p. 135, 1888. (Last larval stage.) 
Moth . — Exterior margin of fore wings excavated between the veins iu both sexes. General 
color above and below smoky brown (mars brown, Ridgway’s Nomenclature of Colors, PI. Ill, fig. 
13), but paler, shading into burnt umber (Ridg., 111,8) along costal edge of fore wings. The dark 
quadrate patch which covers the head and the anterior jiart of 
the thorax is burnt umber, shading darker iiosteriorly. Fore 
wings sparsely irrorate, with brown-black scales, crossed by 
five transverse lines which, with the apical streak, discal dots, 
and fringe, are concolorous. The lines have the same arrange- 
ment as ill all the species of the genus and are not quite con- 
staut in their course. The first one crosses the wing at the 
basal third and is greatly arcuate; secoud at about the middle, 
liassing outside of the rounded obscure inner discal dot and 
either inside or through the outer elongate, siiblinear discal 
dot situated on discal cross vein; third line intermediate 
between second and fifth; fourth contiguous to fifth, which is at the outer third of wing; the 
fourth line is narrower than the other, and often obscure. All these lines, except first and fifth, 
are obscure on the costal edge. Apical streak short from just 
below apex or outer margin, aud runs inward and downward, 
ending at about vein 4. Auterior to the streak, and between 
the median vein and costa, the wing is of a brighter tint, con- 
structing the costal shade seen in all the species. Hind wings 
and abdomen evenly concolorous, mars brown, the abdomen 
darker at tip. Below uniformly paler tlian hind wings above; 
the body parts a shade darker. Primaries shading darker 
toward the apices; the fringe brown-black, as above. 
Expanse of wings, 4G-o3 mm. 
This species is marked exactly likeD. ministra and D. califor- 
nica, hut diifers in the dark smoky-hrowii color throughout. From 
Z>. mtegerrima, 'with which it is often confounded, it differs in the scalloped outer margin of the fore 
wings, the dark hind wings, nearly concolorous with the primaries, and in the comparative scarcity 
of irroration on the primaries and the absence of pale shades bordering the transverse lines 
(Dyar). 
Fig. 57.— Pupa of Datana angusii. End 
of body. 
Fig. 56. — Pupa of Datana angusii. Head, 
dorsal view. 
