132 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



rigM angle and a little oblique outwardly to the inner margin. Trans- 

 verse posterior line geminate, black, denticulate on the veins; the inner 

 portion very narrow and brownish rather than black; the outer part 

 black and lunulate, very little sinuate, and as a whole nearly parallel 

 with the outer margin. The subterminal line is white, very irregularly 

 dentate, and beyond it the terminal space is black marked. There is a 

 series of black terminal lunules, preceded by a white lunulate line, 

 the fringes cut with black. There is a black basal streak, which 

 extends to the transverse anterior line ; another streak extends through 

 the submedian interspace from the median shade line through the 

 transverse posterior line nearly to the anal angle. The ordinary spots 

 are distinct; the orbicular round, white, black margined, and with a 

 dusky center; the reniform large, kidney shaped, outlined by black 

 scales and obscured by the median shade. Secondaries whitish, the 

 veins marked with smoky, and a smoky outer line. Beneath white, 

 black powdered, with a broken outer line and a discal dot on all wings. 



Expanse, 1.36 to 1.5G inches (34 to 39 mm.). 



Habitat. — Folsom, California, in July; Montana. 



I have three males and one female before me. The Californiau speci- 

 mens are from the U. S. National Museum, the other from the collection 

 of Mr. J. Doll. The species is quite different from any of its allies by 

 the marbled appearance and the distinct white ground color. There 

 seems to be considerable variation, but there is not enough material at 

 hand to say just exactly what its range is. The front is convex, but 

 hardly bulging; the legs in the male are as in the rest of the species of 

 this series. The tibia have an unusually small epiphysis, set unusually 

 close to the tip. The genitalia of the male have the harpes unusually 

 short and broad, the clasper with the outer process stout, only a little 

 curved and pointed at the tip. The process near to the base is very 

 long, very slender^ and a little twisted at the tip. It is thus radically 

 different from anything else in the genus or in the section, and the spe- 

 cies is undoubtedly a good one. 



Group HAMAMELIS. 



The species referred here agree in having the primaries rather 

 abruptly widened at base, forming ou the costa a somewhat well- 

 marked arch or shoulder. In all of them the maculation is fairly well 

 defined or distinct, and the ordinary spots are obvious. The trans- 

 verse anterior line is geminate when completely present, and the dashes 

 or dagger marks may or may not be obvious. The male characters are 

 decided and practically alike in all the species. The harpes are well 

 developed, with a diagonal chitinous ridge from the base of the upper 

 side to the inferior margin some distance from tip, and from this arises 

 a single, rather short, stout, curved, beak-like clasper. There is no 

 chance of confusing this type of structure with any other in the genus 

 and the superficial characters also ally the species fairly well, if we 

 except albaru/a. 



