AMERICAN LEPIDOPTERA. 19 



Patagife with a smoky tinge at base of primaries. A series of small abdominal 

 tufts is found in perfect examples. Primaries more or less yellow shaded, the 

 triangular space between the outwardly bent median shade and the t. p. line 

 being the darkest portion of the wing. Basal line geminate, luteous, marked in 

 the costal space only. T. a. line geminate, marked by black dots on the veins, 

 luteous and with outward teeth in the interspaces. T. p. line abruptly bent on 

 the costa, then as a whole very nearly parallel with the outer margin, best 

 marked by a geminate series of small venular dotlets. S. t. line of the ground 

 color, a little irregular, preceded by a continuous, though somewhat irregular 

 luteous or brownish shading. Terminal space more or less completely gray pow- 

 dered. A series of small, black, terminal crescents. Median shade luteous or a 

 little brownish, forming with the t. p. line a V-shaped space, which is a little 

 darker than the rest of the wing. A blackish blotch unites the median lines in 

 the submedian interspace. Orbicular oblique, irregular, not well defined. Eeni- 

 form large, upright or a little oblique, larger superiorly, outlined in rusty brown 

 and sometimes filled with brownish or pale gray, leaving a concolorous annulus. 

 Beneath pale, powdery, varying a little in tint, all wings with a more or less 

 obvious, outer, dusky line and a distinct, blackish discai spot. 

 Expands 35-40 mm. = 1.40-1.60 inches. 



Hab. — Canada, west to Winnipeg, Manitoba; New England, 

 Middle and Central State.s ; Columbu.s, Ohio ; Central Mis.souri ; 

 Berkeley, Colorado. 



Fourteen males and five females are under examination and show 

 little variation. There is a little difference in the amount of yellow, 

 dependent somewhat upon whether the specimen was taken in Fall 

 or in Spring, and so there is a variation in the amount of black 

 powdering, especially in the terminal space. The antennse in the 

 male are ciliated. 



This is the most abundant and widely distributed form of this 

 pale series, extending as it does to the Rocky Mountains, west- 

 wardly, and to the District of Columbia and Missouri on the South. 

 It will probably be found in all except the South Atlantic and Gulf 

 States, as far west as the Rockies at least. 



Xylina patefacta Walker. 



1858, Wlk., Cat. Brit. Mus., Het., xiv, 1733, Xylina. 

 1893, Smith, Bull. 44, U. S. Nat. Mus., 231, Xi/lina. 

 Head, thorax and primaries reddish gray; abdomen and secondaries deep 

 smoky or blackish, fringes pale, with a reddish tinge. Head with superimposed 

 tufts, below which is a black frontal line. Collar with a traceable black line 

 below the tip, around the divided crest. The maculation of the primaries is all 

 obscured. The usual lines are marked by geminate spots on the costa and by 

 geminate black venular dots, indicating a course similar to that in the allied spe- 

 cies. Median shade distinct, from the costa oblique to the lower part of reui- 

 form, then lost in the very distinct blackish patch before the t. p. line in the 

 submedian interspace. S. t. line of the ground color, a little irregular, preceded 



TRANS. AM. ENT. SOC, XXVII. AUGUST, 1900. 



