AMERICAN LEPIDOPTERA. 29 



blackish frontal line; tufts not evident. Collar with a black subapical trans- 

 verse line above a series of red scales, and in turn surmounted by white scales at 

 the base of the thoracic crest. The latter is of moderate size and obscurely 

 divided. Primaries with veins black marked, giving them a somewhat strigate 

 appearance. Kasal black streak evident in all the specimens before me, a paler 

 shading extending to costa but not well marked. Basal line smoky, geminate, 

 marked on the costa only. T. a. line smoky, geminate, very strongly toothed in 

 the interspaces, never well marked, always incomplete, sometimes obsolete. T. 

 p. line geminate, marked through the costal region only. S. t. line marked by a 

 series of black, sagittate, distinct, interspaceal spots. There is a series of small 

 black terminal lunules. Median shade blackish, oblique from costa to lower part 

 of reniform, then much less distinct, inwardly oblique to the middle of the inner 

 margin. Orbicular small or moderate, round or oval, rarely extending below 

 the median vein, black ringed, sometimes pale annulate or paler filled, not con- 

 trasting. Reniform moderate, upright, a little constricted, obscurely pale ringed, 

 narrowly edged with blackish, inferiorly darkened by the median shade. Sec- 

 ondaries smoky, with a yellowish tinge, fringes paler, veins and a discal lunule 

 darker. Beneath powdery, primaries with disc smoky, else gray with a rosy 

 tinge, secondaries with a more or less obvious exterior line, all wings with discal 

 spots. 



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



Hab. — Winnipeg, Manitoba; N. W. British Columbia; Van- 

 couver; Pullman, Washington; Sierra Nevada, California. 



Six males and two females, difiering from georgii chiefly in the 

 darker blue ground color, less evident maculation and thicker, more 

 lengthily ciliated male antennae. There is very little variation save 

 such as is due to the condition of the specimens, except in the form 

 of the orbicular. This varies in size from small to moderate, from 

 round to oval or oblong, and rarely it extends below the median 

 vein, indicating a suborbicular. 



Xylina i;eorgii Grote. 



1875, Grt., Can. Ent., vii, 188, Lithophane. 



1887, Grt , Can. Ent., xix, 55, Lithophane. 



1893, Smith, Bull. 44. U. S. Nat. Mus., 228, Xi/lina. 

 Head, thorax and primaries ashen gray, a little smoky. Front with a broad 

 smoky band across the middle. Collar with a black line above the middle, sur- 

 mounting a very feebly marked reddish shade. Patagife with a black line at 

 base of primaries. Thoracic crest low and not divided. No evident abdominal 

 tufts. Primaries with a distinct longitudinal line at base, surmounted by a clear 

 white line. Basal line geminate, smoky, oblique across the costal region. T. a. 

 line geininate, broken, traceable across the wing, very strongly dentate. T. p. 

 smoky, geminate, marked in the costal region only. The median shade is broad, 

 diffuse, smoky, not relieved, oblique from costa between ordinary spots to the 

 inferior portion of reniform, then forming a right or slightly acute angle to 

 within the middle of the inner margin. S. t. line a series of smoky or blackish 

 spots, beyond which the terminal space is a little darker. Veins a little darkened 



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



