1882.] 137 [Hagen. 



large, white inclosed spots reach the margin and are tipped there 

 by orange. The nervures on the underside of the secondaries are 

 broadly bordered with black, in two specimens so broadly that 

 they are, except the disk, nearly black. A few specimens show 

 also black scales along the nervures on the upper side of the sec- 

 ondaries. I can affirm for P. menapia Mr. Scudder's statement, 

 that "the outer angle of the secondaries is more prominent, and so 

 the whole hind margin less curved." Of 133 males before me (111 

 from Colville Valley) some represent differences of minor value. 

 Average expansion 52 mm. ; the largest from Colorado, 58 mm., 

 the smallest 42 mm. from Washington Terr. The apical spot of 

 the primaries is very large, even exceeding sometimes the second 

 nervule, but never reaching the third ; in one the spot is only 

 half as broad ; the white spots within differ in size ; the black 

 bands on the under side of the secondaries are not rarely repeated 

 on the upper side, mostly on the external half of the wing. 



Habitat. Port Townsend, W. T. A large number collected 

 by Mr. A. Agassiz, May 16, 1859. A dozen are still in the Museum, 

 the others according to the catalogues of the Museum have been 

 sent in exchange to a number of entomologists (H. Edwards, 

 Reakirt, etc.) ; so far as I know all were males ; the females 

 labeled by Mr. Scudder are males. 



Garden of Gods, near Manitou, Col., August 1, 1871, Mr. J. A. 

 Allen collected a large number, which were exchanged with 

 many entomologists, and mentioned in Mr. Mead's Report. Two 

 males and one female, which is white and nearly identical with 

 the male, are still in the collection. A similar female from British 

 Columbia collected by the late Mr. G. R. Crotch, after June, has no 

 nearer data. The Museum received in 1876 in exchange 14 males 

 from Oregon by Mr. Strecker. During our trip in Washington 

 Territory, 1882, we found the first specimens July 21, in Spokane 

 Falls; probably the white butterflies we saw on the railway from 

 Cheney the day before belonged to the same species, as well as 

 those seen by Mr. Stretch, July 22, on his return. On the excur- 

 sion to Colville Valley we saw, July 23, before Loon Lake a num- 

 ber in the forest. All were worn males but one, which is as I 

 see now a female, white and nearly like the male, so that it was 

 easily overlooked. Returning from Brown's farm to Loon Lake, 

 July 24, we found the first yellow females. Their sudden 



