44 



bent and somewhat irregular whitish band just beyond the middle, 

 edged on both sides with black ; within this four or five large whitish 

 spots edged with black and irregularly disposed. Expanse of wings 

 1.5 in. It is closely allied to M. Anicia Doubl. 



One specimen was taken June 15 th, at the upper end of the Ram- 

 parts. 



Melitsea sp. 



One specimen, too much injured to be determined with accuracy, 

 but perhaps belonging to M, Palla Boisd., was taken at Fort Yukon 

 June 25th. 



Lyesena Lucia Westw. 



Four worn 9 specimens seem to be referable to this species. Two 

 of them were taken June 6 th, fifty miles above Nowikakat, and one 

 June 2d, at the mouth of the Melozikakat River. 



Pieris venosa Scudd. 



The specimens from Alaska on an average seem to be darker than 

 those from California, and as in that country, the $ is ajiparently the 

 more abundant sex. In passing down the valley of the lower Yukon, 

 between the Mission and the sea, Mr. Dall saw no other species of 

 butterfly. The species of Papilio and the other showier butterflies 

 were confined to the more wooded portions of the river above. 



Fifteen S , five 9 . Most of the specimens were taken at Nulato, 

 but also farther down the river, between June 14th and June 30th. 



Anthocaris lanceolata Boisd. 



One gi-eatly damaged specimen, apparently belonging to this spe- 

 cies, was taken on the upper Yukon River. 



Colias interior Scudd. 



One S taken at Fort Yukon June 25 th. 



Papilio Turnus Linn. 



The specimens from Alaska are remarkably uniform in character, 

 and, unless slightly smaller, differ in no respect from New England 

 individuals; tliey hardly exhibit so much variation as one often finds 

 among specimens in a limited district, — about the White Mountains 

 of Nev/ Hampshire, for instance. In one specimen, however, (taken 

 June 15th, at the upper end of the Ramparts), and in others to a less 

 degree, all the submarginal lunules of the upper surface of the sec- 

 ondaries are distinctly orange-fulvous like the anal spot, instead of 

 being colored like the centre of the wing. 



Seventy-two specimens were brought home, all but one of which 

 were collected in June, mostly on the 6th and 7th, but also on the 



