28 JOHN B. SMITH. 



Four males and eight females ; all except one from Dr. Barnes. 

 There is quite a range of variation from almost uniformly gray ex- 

 amples in which the black streak through the submedian interspace 

 is the only obvious marking, to the brightly marked type with sliarp 

 basal and subapical streaks and a reddish tinge over the reniform 

 or through the middle of the wing. All the latter are October ex- 

 amples, and all of the former type have hibernated and are more or 

 less flown 



The antennae of the male are very feebly ciliated and scarcely 

 thicker than those of the female. 



Xyliiia eniar$;iiiata u. sp. 



(iiouud color of head, thorax and primaries very pale, ashen gray, almost 

 whitish. Head with a smoky brown line across the front, the tiiftings not well 

 marked. Collar with a narrow black transverse line, surmounting a nairower 

 reddish line. Thoracic crest low, not divided. I'atagiaj with a black line at base 

 of primaries. Primaries with the veins very narrowly smoky. There is a nar- 

 row black longitudinal line at base, extending deep into a tooth of the t. a. line. 

 Basal line obscurely marked on the costa only. T. a. line marked by geminate, 

 smoky, oblique lines on the costa, and below that traceable in some examples by 

 a narrow paler line, obscurely edged by darker scales, indicating lengthy teeth 

 in the interspaces. T. p. line lost, except as a pair of smoky, oblique marks ou 

 the costa. No obvious median shade. S. t. line vaguely marked by a series of 

 small intersi)aceal smoky spots, which tend to become obsolete. A slightly 

 darker terminal line, which may be broken into dots on and between the veins 

 and may be altogether wanting. Ordinary spots traceable, with smoky, scarcely 

 relieved outlines. Orbicular moderate in size, oval, oblique, in some examples 

 with an extension or suborbicular below the median vein. Reniform rather 

 large, incompletely defined, a little constricted centrally, larger inferiorly, the 

 middle with a small reddish tinge. Secondaries very pale yellowish gray or 

 smoky, veins a little darker, discal spot obvious. Beneath whitish, powdery, 

 with dusky discal spots. 



Expands 40-45 mm'. = 1.60-1.80 inches. 



Hub. — Colorado Springs and Glen wood Springs, Colorado, April, 

 August, October. . 



Two males and two females, very much alike and lecognizable in 

 this series by the practically obsolete ornamentation. The ordinary 

 spots can be fairly well made out; but the transverse lines are so 

 lost that only one who knows exactly what to seek can make them 

 .out. Superficially the insect resembles /(u/w^a ; but the ordinary 

 •spots are obvious and this species has a distinct basal dash. The 

 antennae of tlie male are shortly ciliated. 



Xyliiia liolociiieroa n. sp. 



Head, thorax and primaries deep bhiibli gray. Head darker in front, with a 



