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5 
ae PROCEEDINGS OF THE NATIONAL MUSEUM. 75 
HABITAT: Sierra Nevada, Nevada County, Lake County, Placer 
County, in June, all in California; Washington. 
This insect I described originally as a variety of rubrica and referred 
it to Mamestra. It has a distinct habital resemblance to some species 
of that genus; but the balance of characters is in favor of Xylomiges. 
The material now before me shows that we have a very distinct species, 
with constant characters, but with exactly the same general pattern of 
maculation. The ground coloris always ash-gray and thereis no gradation 
to the reddish tint of rubrica. The orbicular is broadly oval and upright 
in the present species, distinctively different from the elongate, oblique, 
oblong form in rubrica. The outer margin is also rather more dentate. 
The sexual characters are very similar to those of rubrica, the harpes in 
subapicalis terminating in a similar form, not so lengthily produced 
however at tip. The claspers are much alike and the differences are 
best shown by a comparison of the figures. 
Several specimens are in the collection of the U.S. National Museum 
‘(through C. V. Riley), some of them with the red number 336. The: 
principal variation is in the depth of the ground color and the conse- 
quent relative prominence of the darker maculation. 
[This is perlubens Grote. | 
Xylomiges ochracea Riley sp. nov. 
Ground color dull luteous, more or less white-powdered and variably 
dusted with ocherous. Head varying from white to the darkest shade 
in the insect. The thorax varies in the same way. Collar tipped 
with luteous, fuscous, or even blackish, patagiz dark margined. Pii- 
maries with veins white marked, the contrast greatest in the darkest 
specimens; costa also white in most specimens. Basal line geminate, 
black, included space white, the black lines rarely complete, sometimes 
reduced to a few scales; but always traceable. TT. a. line geminate, 
black, included space white, outwardly oblique in three even outcurves; 
the black defining lines are narrow and often interrupted, the interior 
line sometimes scarcely traceable. T.p. line geminate, included space 
white; preceding line a series of blackish lunules, outer line a series of 
black scales merely. In course it is quite widely outcurved and then 
inwardly oblique, only a little curved, to the inner margin. The line 
is unusually near the outer margin, and through the yellow space 
beyond it is an ocherous shade line, in which is sometimes a series of 
black lunules defining the s. t. line; more usually, perhaps, these lunules 
are wanting, and the yellow shade alone marks the line. <A series of 
black terminal lunules, beyond which the fringes are cut with a dusky 
Shade. Claviform present, quite variable in size, usually paler than 
the ground color, but sometimes concolorous, margined by a pale line 
which is sometimes defined by an edging of black scales. Orbicular 
large, round, or oval; reniform upright, constricted centrally. The 
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