sie PROCEEDINGS OF THE NATIONAL MUSEUM. 69 
Xylomiges peritalis sp. nov. 
Ground color of head, thorax, and primaries bluish gray, powdery, 
‘the maculation blackish. Palpi with a faint, pink tinge. Front with 
a blackish band across base and another at middle. Collar with a 
black transverse band. Patagize black margined at base of wings. 
Primaries with the transverse lines marked by geminate spots on 
costa, but very vaguely marked below. A black longitudinal line at 
base to t. a. line, and opposite is the large, concolorous claviform out- 
lined in black. A black bar from the t. a. line to the large, pale orbic- 
ular, which is oval, black margined, but not defined superiorly, nar- 
rowly confluent with the large kidney-shaped reniform. A dusky oblique 
shade from costa between the ordinary spots crosses the reniform in- 
feriorly and darkens it; outwardly the spot is incomplete, and from it 
a faint ocherous stain extends to the terminal space. The veins areall 
more or less evidently black marked, and beneath vein lis a dusky 
shade. T. p. line evenly bisinuate, concolorous, barely traceable by 
the faint fuscous defining lines. S. t. line evident, marked with a few 
yellow scales, but defined principally by the blackish terminal-space, 
somewhat toothed on veins 3and 4. Fringes dentate, cut with blackish, 
gray at base. Secondaries white, faintly reproducing the macuiation 
of under side. Beneath white, primaries black powdered, most evidently 
near outer margin, a faint discal spot, an incomplete extra discal line, 
and a row of terminal dots; secondaries powdered only along costal 
margin, with a large black discal spot, a punctiform extra discal line, 
and a subcontinuous marginal line. 
Expands 40 millimetres=1.60 inches. 
Hapsirat: Colorado (Bruce); Oregon (Strecker). 
A single specimen in good condition from Mr. Neumoegen’s collec- 
tion; but I have seen others, also of Mr. Bruce’s collecting. In wing 
form, general habitus, and type of maculation this species is the close 
ally of the Californian hiemalis. It is, however, decidedly larger, and 
the pectinations of the antennz of the male are very short, in marked 
contrast to the long branches on hiemalis. | 
The occurrence of such forms, closely allied in all habital and orna- 
mental details, with so evident a structural character, is interesting. 
The sexual characters again are very much like those of hiemalis, in 
the form of the harpes at ieast; the clasper is distinctly different, as 
may be seen by a comparison of the figures of each. 
Xylomiges crucialis Harvey. 
1875. Harv. Buff. Bull. 11, 277, Xylomiges. 
Ground color pale bluish gray. Head with vertex slightly darker. 
Collar with a black transverse line. Thorax with a black crest line, 
patagiz with a lateral line at base of wings. The primaries have all 
the veins black marked, the ordinary lines obsolete. A distinct black 
