236 
represents. the reniform; t. p. line blackish, very close to outer margin with 
which it is practically parallel; the space between these two lines sprinkled with 
white scales, often quite heavily; fringes blackish, slightly ochreous at tips. 
Secondaries and underside deep-black; abdomen black, at times with posterior 
half tinged with reddish. Expanse 13 mm. 
Hasitat. Mineral King, Tulare Co., Calif. (10,000 ft.) (Pilate). 6 6, 
5 9. Types, Coll. Barnes. 
This may be a variety of muiri Hy. Edw. (rubralis Warr.) of 
which we possess a long series from the type locality, Truckee, Calif. ; 
two specimens of the new species show a distinct reddening of the 
secondaries both above and below without however approaching the 
bright color of muiri. The t. p. line in atripennalis appears to be 
closer to the outer margin and more evenly curved than in muiri, so 
for the present we prefer to regard it as a distinct species. 
ORENAIA COLORADALIS sp. nov. (PI. I, Fig. 13). 
Palpi, head and thorax blackish, mixed with white scaling; primaries black- 
ish heavily scaled with whitish; a black dot at base of wing followed by an 
obscure black sub-basal line with outward tooth on median vein; t. a. line black, 
bordered inwardly with white, almost perpendicular, with prominent dentations 
on cubitus and vein 1; reniform a small black dash; t. p. line black, bordered 
outwardly with white, finely dentate, slightly outcurved around cell; terminal 
area darker than median; fringes smoky. Secondaries smoky with an obscure 
dark subterminal line bent inwards on vein 1 and a faint discal dot; fringes 
rather paler. Beneath silvery-gray with slight smoky tinge, costa pale ochreous; 
primaries with prominent discal spot and t. p. line as on upper side, this latter 
shaded outwardly slightly with pale ochreous at costa followed by a smoky apical 
shade; secondaries with markings of upper side more distinctly repeated. 
Expanse 18 mm. 
Hasitat. Silverton, Colo. (July 24-31). (McDunnough). 1 ¢. Type, 
Coll. Barnes. 
Resembles in habits and general appearance the European mem- 
bers of this genus, which are heliophile and confined to the Alpine 
regions ; it is closest to rupestralis Hbn., but differs in sufficient par- 
ticulars, notably the markings of the underside, to warrant its sep- 
aration. 
ORENAIA TRIVIALIs sp. nov. (PI. I, Fig. 14). 
Palpi black, beneath white; head and thorax black slightly white sprinkled, 
latter with rear portion bordered with a white line; primaries smoky black with 
obscure maculation in black consisting of a basal dot, a rather straight t. a. 
line, a t. p. line, minutely dentate below costa and well incurved at fold, and 
black shades representing orbicular and reniform; an s. t. line is represented 
