48 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



traceable, but more or less broken. The basal line is entirely wanting-, 

 or is marked on tlio costa only. The transverse anterior line is never 

 entirely comi)k't(^, and rarely even traceable across the entire wing. 

 It is geminate, the inner line more distinct, and often this is prominent 

 only just below the cell, where it forms a little inward tooth from wliich 

 the line is feebly traceable to a costal spot on the one hand and to a 

 more vague blotch on the inner margin near its middle. The trans- 

 verse posterior line is single, consisting of a series of connected luuules 

 which are black and quite obvious, somewhat em])hasized by a preced- 

 ing paler shade. The line is only a little toothed on tlie veins, and 

 as a whole makes an even outcurve, followed by one as evenly inward 

 in the subniedian interspace. There is a vague median shade, often 

 traceable across tiie entire wing, bnt obvious only as an oblique mark 

 from the costa to the reuiform. Beyond the transverse posterior line is 

 a dnsky shade, which gradually merges into the ground color belore the 

 outer margin. There is a series of terminal black spots, beyond which 

 the fringes are marked but not entirely cut by dusky. There is a dis- 

 tinct dash crossing the transverse posterior line opposite the anal angle, 

 but there is no line opposite the cell. The orbicular varies in size 

 and shape; sometimes small, sometimes large, and it may be entirely 

 rounded or distinctly oval. It is always ringed with blackish and is 

 not dark centered. The reuiform is kidney shaped, large, more or less 

 incomplete, and with a central dusky lunate mark. The secondaries 

 are whitish, with a faint yellowish tinge in the male, smokj'^ brown in 

 the female. In both sexes there is a series of terminal lunules, whicli 

 are sometimes almost connected. Beneath, the wings are whitish or 

 smoky, powdery, and in tlie male with a more or less obvious discal 

 spot; in the female also with a more or less obvious outer line. 



Expanse, 1.70 to 2 inches (42 to 50 mm.). 



Habitat. — New»York; Philadelphia, Pennsylvania; New Jersey; 

 Washington, District of Columbia, May 29; Massachusetts; Califor- 

 nia; Canada in June; Georgia; Central States. 



I have 7 males and females representing this species, which has 

 been generally confused in collections, sometimes with (lactyliiio, and 

 sometimes with amcrieana. It resembles both and ditfeivs Irom botli, 

 and its most obvious character is the difference between the sexes. 

 The males are smaller and much paler throughout, not only in the sec- 

 ondaries, but in the primaries as well. The secondaries are much more 

 robust, and the fore wings are distinctly broader and less trigonate 

 than they are in the male. This species was properly iigured in both 

 stages by Smith and Abbot, and can be readil}' separated from ameri- 

 can<(, on the one hand, by its paler ground color, smaller size, and single 

 transverse i)osterior line, and from dactylina by the yellowish shading, 

 which is totally absent in the latter species. 



