DIURNAL LEPIDOPTERA COLLECTED IN ALASKA. 



Family PAPILIONIDiE. 



Subfamily PAPILION^. 

 Genus PAPILIO LinniEus. 



Papilio MAOHAON-Linu., var. Aliaska Scudder. 



This form seems to be abundant at Saint Michaels, and was found high up the Yukon 

 Eiver by Dall. The most easterly point at which it has been observed is Eupert House, Hudson's 

 Bay. It would appear to fly over the boreal regions west of Hudson's Bay, but it was not taken 

 by Mrs. Eoss at Port Simpson some years ago, though a very large collection of butterflies was 

 made there. Captain Geddes did not find it along the line of the Canadian Pacific Eailroad nor 

 in the Peace Eiver district in 1883, nor did the late Mr. Crotch take it in British Columbia, though 

 he collected as far to the north as Bald Mountain. It is the same form, apparently, which flies in 

 the Himalayas and other parts of Eastern Asia, confounded with Asiaticus M6n6tri6s, which is the 

 name of an aberration only. There is some variation in color among the examples from Saint 

 Michaels, most being pale yellow. But one male is deep yellow, and so is like the Hudson's Bay 

 examples so far observed. 



Subfamily PIBEIN^. 



Genus PIERIS Scbrank. 



PiEEis Napi Linn. Winter form Bryonice Ochsenheimer. 



A number of examples were taken at Saint Michaels, 1878, at dates from June 2 to July 

 7. They are all of small size, the males expanding 1.5 inch, the females l.G inch. The male is 

 white; on the under side the hind wings are either white or faint yellow, the uervures heavily 

 edged with gray-brown, just as in examples from Lapland. The females are much obscured on 

 upper side by gray, and the nervures are broadly edged with gray. Two Lapland females are 

 yellow, obscured by brown ; so also are some examples from the Alps, but 1 have not found Alaskan 

 females of this hue. The winter form of Nain flies over the entire boreal part of the continent. It 

 is single-brooded, and to the south, on the Pacific slope, is replaced by the winter form renosa, 

 Scudder, its summer form there being pallida Scudder. Mr. Mead took many examples of both 

 sexes of Bryonice on Newfoundland. The species there is two-brooded, and the butterflies of the 

 second brood in markings lie between venosa and pallida of the west. I called this Newfoundland 

 summer form Acadica, Papilio 1, p. 87, 1881. The butterflies of the winter form on this island 

 are nearly twice as large in superficial area as tiie Saint Michaels examples. 



