58 
TOETEICID^. 
and a pale ocellated spot above the anal angle, including two black spots, externally margined 
by bluish lustrous scales. Hind wings whitish grey, with a faint tinge of reddish brown 
towards the margins; vein 4 absent. S ^,1 ? . Expanse of wings 13-16 millims. 
April 17th, 1872, North Oregon, near the Columbia River. 
Semasia decempunctana. (Plate LXXIII. fig. 6.) 
Head, palpi, and antennse grey; palpi short, well clothed, the apical joint not exposed; 
patagia brownish buflp. Fore wings — with the costa scarcely arched; apical margin very 
oblique, not concave ; dorsal margin rounded near the base — greyish white, a rusty buff- 
coloured shade at the base, blending into the pale ground-colour beyond ; the first third of the 
wing with a wedge-shaped projection on its outer edge, reaching nearly to the middle ; an 
indistinct narrow oblique buflP-brown fascia beyond the middle, some white-margined buff 
spots on the costa beyond it, and a buff line, internally white-margined, along the upper half 
of the apical margin ; an ocellated spot above the anal angle is divided transversely by a 
double row of ten black dots, and contains some faint silvery lines. Hind wings whitish grey, 
shaded with greyish brown along the margin; vein 4 is present in this species. 4 . 
Expanse of wings 18 millims. 
Fort The Dalles, Oregon, April 20th, 1872. 
Semasia perangustana. (Plate LXXIII. fig. 7.) 
Face whitish ; the head rather greyish ochreous above ; palpi j^i'ojecting rather more 
than the length of the head beyond it, dusky whitish ; the antennae less than half the length 
of the fore wings, not pubescent. Fore wings — more than three times as long as wide, the 
apical margin very oblique, scarcely indented ; the costa very slightly arched — olivaceous 
ochreous, sparsely irrorated with a few fuscous scales; some rather shining whitish costal 
streaks beyond the middle, Avith some few fuscous scales between them, and a pale rather 
shining whitish ocellated spot above the anal angle, including two or more short black streaks ; 
a fuscous line along the apical margin at the base of the cilia, which are shaded with fuscous 
along their middle, but tipped with white. Hind wings greyish; vein 4 absent. 2 . 
Expanse of wings 15 millims. 
June 1872, Siskiyou Mountains, extreme north of California. 
Semasia lapidana. (Plate LXXIII. fig. 8.) 
Palpi compactly clothed, rather club-shaped, moderately short, projecting scarcely the 
length of the head beyond it; the apical joint not exposed; together with the head mixed 
greyish white and fuscous : antennae in both sexes scarcely pubescent. Fore wings — three 
times as long as wide, the costa scarcely arched ; apex rounded ; apical margin very oblique 
— yellowish stone-colour, densely irrorated with greyish-white and greyish- fuscous scales : an 
