1 904 ] SMI TH: — NO C TUIDS 5 7 



median interspace and seems to reach the inner margin on the median shade. T. p. line 

 faintly traceable in one example as a narrow, strongly crenulate line. The median shade 

 darkens the space between the ordinary spots, runs from above the orbicular to base of reni- 

 form, thence to the middle of the hind margin. It is obscure, diffuse and tends to obso- 

 lescence. S. t. line is a series of smoky sagittate spots which tend to run together and do 

 not reach the costa. Orbicular rather small, ovate, upright or a little oblique, neatly black 

 ringed, complete within the cell ; but in two examples there is a supplementary spot faintly 

 indicated. Reniform upright, broad, a little constricted centrally, lower angles tending 

 to extend, outlined by black scales, a few brown scales in center. Secondaries lustrous, 

 smoky, with a reddish tinge toward base, a vague dusky discal spot and reddish fringes. 

 Beneath, primaries smoky, with a powdery paler terminal space; secondaries reddish gray, 

 powdery, with a distinct blackish discal spot and a smoky extra median line which tends to 

 obsolescence. 



Expands i. 70-1. 90 inches = 43-48 mm. 



Habitat: Ottawa, Ontario, October 3-7; E^r. J. Fletcher. 



One male and four females : all good specimens. Resembles aticilla in appearance and 

 general characters and with it belongs to the ^eor^/V series. As compared with ancilla this 

 species is more even in color, has much smaller spots and has traceable median lines, at least 

 the t. a. being marked in all cases. The general pattern is the same. 



Xylina ancilla, n. sp. 



Ground color dark bluish gray, powdery. Head with a black frontal line ; basal seg- 

 ments of antennae scaled with white ; collar with a narrow black median line ; patagia with 

 a black line at base of wings. Primaries very uniform in color, the veins black marked, 

 though not prominently so, costal half of basal space the palest part of the wing. There is 

 a narrow black basal streak in the submedian interspace. An obscure dusky shade angles 

 on this line near base, extending outwardly to costa and to the inner margin, the upper 

 portion forming the limit of the basal paler area. The median lines are lost. A diffuse 

 median shade which tends to obsolescence starts from costa above orbicular, angles outward 

 to the base of reniform, then inward to the middle of inner margin. A slightly irregular 

 series of small sagittate black spots indicates the s. t. line. A series of obscure dusky 

 terminal lunules. Claviform wanting. Orbicular large, irregularly oval, oblique, with an 

 appendix below the median vein, concolorous, more or less distinctly outlined by black 

 scales. Reniform large, broad, upright, a little dilated interiorly where it is darkened by the 

 median shade and relieved by a few brown scales — the only color patch on the wing. Sec- 

 ondaries smoky, a little paler at base, lustrous, with a darker discal lunule and whitish 

 fringes. Beneath, primaries ranging from reddish gray to dark smoky, the paler examples 

 with a dark discal spot. Secondaries reddish gray, powdery, with a conspicuous black 

 discal spot, and an extra median, somewhat wavy dark line. 



Expands i. 50-1. 75 inches ^37-43 mm. 



Habitat: Calgary, Alberta, Head of Pine Creek, September iS, Mr. Dod ; Cartwright, 

 Manitoba, October 6, Mr. Heath; Wellington, British Columbia, September 7, Mr. Bryant. 



One male and two females, in good condition. The species is allied to oregonensis 

 Harv., but is of a very dark blue gray, with much less contrast, and inconspicuous macula- 

 tion. The scant material indicates a considerable range of variation and that the more uni- 

 form examples may be confused with well rt\&v\i&(S. georgii ox holocitierea. 



