32 BULLETIN 38, UNITED STATES NATIONAL MUSEUM. 



isb-brown. The collar lias a narrow central pure white line, above 

 which the prothoracic pieces are velvety black; primaries with the costal 

 edge broadly dark ashen to the inception of the t. p. line, absorbing- 

 the superior portion of the orbicular spot; reniforiu gray, like the costal 

 edge, moderate, with faint dark internal ring; ordinary lines geminate, 

 tine, not very distinct or complete, black; the t. a. line waved, nearly 

 perpendicular; the basal half line visible on the gray costal edge; the 

 t. p. line roundly but not greatly exserted opposite the cell, followed 

 by minute black and white points on the subtermiual space; median 

 space with a more ruddy brown tinge than the rest of the wing and like 

 the thorax and tegulai; the faintly pale subtermiual line is shaded with 

 brown and the dark fringes are brown at base and show a faint interior 

 line; hind wings blackish without marks, with white-tipped fuscous 

 fringes that show a broad interior line ; abdomen blackish ; beneath 

 the wings are a little paler, irrorate, with a rather distinct blackish 

 common line and black discal marks on the hind wings." 



Expands 35'"'"; 1.40 inches. 



The above is Mr. Grote's description oi/ormalis. The form insularis 

 is described as follows : 



" 9 Purple red brown with ashen costal region crossed by the gemi- 

 nate black transverse lines ; stigmata concolorous ; cell between them 

 and before the orbicular black ; reniform narrowly edged with pale, a 

 black sub-basal curved dash, course of the lines as in exsertistigma, collar 

 ashen ; thorax red brown; hind wings fuscous with interlined fringes: 

 allied to exscrivdujma ; differs in color and in the black lines, and in 

 the more bent subtermiual followed by pale points, as well as in the 

 more rounded orbicular." 



Expands 34""" ; 1.3G inches. 



A long series of specimens from California and Vancouver prove 

 these forms identical. The black filling of the cell is not constant and 

 varies from a mere shade to a distinct black filling, the latter being the 

 more usual. In the type form the costa and ordinary spots are dark 

 gray, and the claviform is very faintly marked; the median space has 

 a more evident reddish brown cast and the secondaries are blackish. 

 In the variety insularis the color is more evenly red brown, the collar not 

 blaciv above but darker than the inferior portion which is tinged with 

 yellowish, as is the costa. The ordinary spots are concolorous, outlined 

 by the black filling of the cell, and a few yellowish scales ; the secon- 

 daries have a yellowish tint. All intermediate forms are found in both 

 sexes, and I have no doubt of their identity. The genitalia of the 

 male are alike in both forms; they are peculiar in having the inferior 

 angle of the harpes rounded and the clasper unusually long and strongly 

 curved. 



In my own experience the species varies in size from 35-37'"'", 1.40 1.48 

 inches, and it seems not uncommon in California, Vancouver, and 

 British Columbia. 



