DIURNAL LEPIDOPTERA COLLECTED IN ALASKA. 



Family PAPILIONID^. 



Subfamily rAPILIONJi. 

 Geuus PAPILIO Liuiianis. 



Papilio Machaon Liuii.. var. Aliaska Scudder. 



This form seems to be abuudaut at Saiut Michaels, aud was foimd high up the Yukou 

 Eiver by Dall. The most easterly poiut at which it has beeu observed is Rupert House, Hudson's 

 Bay. It would appear to fly over the boreal regions west of Hudson's Bay, but it was uot takeu 

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

 made there. Captain Geddes did uot find it along the line of the Canadian Pacific Railroad uor 

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

 be 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 Asiatkiis M6ndtries, which is the 

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

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

 examples so far observed. 



Subfamily PIERIN^. 

 Genus PIERIS ScUruuk. 



PiERis Xapi Linn, ^yiuter form Bryonm Ochsenhieimer. 



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

 7. They arc all of small size, the males expanding 1.5 inch, the females l.C iuch. The male is 

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

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

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

 yellow, obscured by brown ; so also are some examjiles from the Alps, but i have uot found Alaskan 

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

 is single-brooded, aud to the south, on the Pacific slope, is replaced by the winter form rcnosa 

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

 sexes of Bryonhv on Newfoundland. The species there is two-brooded, aud the butterflies of the 

 second brood in markings lie between venosa aud pallida of the west. I called this Xewfouudlaud 

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

 arc nearly twice as large in superficial area as tlie Saiut Michaels examples. 



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