411 



Distribution : Described from Nevada. Ariz., S. Cal., Utah, July 

 to Sept. Dr. McDunnough sent us one S taken at Avveme, Man., 

 July 13, 1904, which appeared to be fishii, but it was in such poor con- 

 dition that we could not be certain of its identity. 



This is the only species known to us in which the sexes differ. 

 A good series in the Grinnell collection from the San Bernardino Mts., 

 Cal., convinced us of this, for it was possible to separate the males 

 and females of this series, without an exception, without examining 

 the sexual organs. Our own material was too limited to bring us to 

 this conclusion, but it is significant that we had set aside a series of 

 males from Cal. and Ariz, as a new species, and a series of females 

 from Utah as fishii before seeing Grinnell's series. 



In order to avoid confusion which might have arisen from the 

 extreme paleness of the markings in some females, we are including 

 the species in the key both in the group having a costal mark over 

 the base of the cleft and in the one which lacks this mark, though it 

 appears to be at least faintly developed in all of our specimens, as 

 already noted. 



The unique 9 type is in the Fernald collection. It now consists 

 of the thorax and left secondary only, but in the pale color of the 

 wing it corresponds with our females. 



The early stages are unknown. 



29. OlDAEMATOPHORUS CADMUS n. sp. PI. XLVTI, fig. 3. PI. LII, 

 fig. 5. 



Head brown in front, slightly brownish above, white between antennae. 

 Antennae and palpi white, the latter rather short, slender and oblique. Thorax 

 and abdomen whitish, the latter with three brown stripes below and sometimes 

 vague traces of two above. Legs white, fore and mid tibiae and all spurs with 

 fine brown stripes. Spurs long, first pair on hind tibiae reaching well over 

 half way to terminal pair, and these about half as long as first joint of tarsi. 



Primaries white, irrorate with brown. The brown scales darken the first 

 lobe rather evenly, but are more or less blotchy elsewhere. At base of cleft 

 is a white space preceded by a curved, powdery brown line which margins a 

 patch of brown irroration extending slightly basad and joining a costal brown 

 dash over base of cell. Beyond this is one other costal spot. Apex of first 

 lobe, inner margin before apex and sometimes tips of veins in second lobe 

 with small browMi dots. Fringes white or whitish in cleft with brownish gray 

 tufts at and before apex of first lobe; white on costa, gray brown at spots; 

 brownish gray mixed with white ehewhere, with two white patches on outer 

 margin of second lobe. Secondaries and their fringes very pale brownish gray. 

 Expanse 14-16 mm. 



