INSECTS. 329 



Butler informed me that the example sent him for determination agreed perfectly with one in the 

 British Museum collection, labeled "Nova Zembla;" also with two of the Grinnell Land series, 

 included under Mr. McLachlan's varieties of chariclea. 



Subfamily SATYEIN^. 



C4emi8 EREBIA Dalman. 



Erbbia fasciata Butler. 



One female taken at Kotzebue Sound July 14, 1881. This is au exceedingly rare species in 

 our collections. I have seen but two examples of it before the arrival of this from Mr. Nelson. It 

 is the largest American species of the genus, the male almost black on upper side, the female dull 

 russet over the disks of both wings. On the under side of both sexes is a band beyond middle of 

 both wings, brownish on fore wing, gray on hind wing; and next to the base is a brown area on 

 fore and a gray one on hind wing; the area between the brown and gray is black, a band in fact, 

 with jagged or irregular edges. Mr. Butler's description in the Catalogue of Satyridae of the 

 British Museum Collection, 18G8, gives the locality as "Arctic America," and beyond this nothing 

 appears to be known of the locality of the species. 



Erebia disa Thuuberg, var. Ma>'CINUS Doubleday and Hewitson. 



Examples from Kotzebue Sound July 14. One is labeled "Arctic Ocean," July 17; another, 

 "Cape Thompson, Arctic Ocean," July 19, ISSl. Others are from Saint Michaels. The species 

 would seem to be common in Northern Alaska; I have seen several examples taken at Saint 

 Michaels in former years. There is much variation in the markings of the under side in a series, 

 some examples being banded much as in fasciata; others have the bands obsolescent. Kirby 

 credits disa to boreal Europe and boreal Asia, and Rocky Mountains of America. Probably boreal 

 America (northwest) is the correct locality. 



Genus CHIONOBAS Boisilnval. 



Chionobas Taygete Hiibuer. Bootes Boisduval. 



Of this, two males and one female are from Saint Michaels, not differing from the Labrador 

 type. Probably the species flies through the boreal regions across the continent. 



Family LYCJENID^. 

 Subfamily LYC^NIN.E. 

 Genus LYC.ENA. 

 Lycjsna Psexjdargiolus Boisduval. Arctic forui, Yiolacea Edwards. 



Two males from Saint Michaels. The species has two Arctic (or winter) forms, the other 

 being Lucia Kirby. The latter was taken on the Yukon River by the expedition under Dal], 

 as Mr. Scudder reports. (Pr. Bost. Soc. N. History, 1869.) These two forms fly from Alaska 

 to New England. Where the species becomes two-brooded, in Canada and the Northern United 

 States, the summer or second brood is L. negJecfa, quite a different butterfly in appearance. 

 Farther to the south other forms present themselves, and under some of these the species is found 

 even in Mexico. I have given a full account, illustrated by figures, of all the phases of this species 

 in Butterflies of North America, volume 2. 



I subjoin a list of all species of butterflies so far known to have been taken in Alaska. Doubt- 

 less many more remain to be discovered, especially in the southejn parts of the Territory. In 



