_Butterfly._--Somewhat closely resembling _B. chariclea_, but with the markings much heavier on the outer margin, and the base of the wings generally more deeply obscured with dark brown. The wings on the under side in color and marking closely approximate those of _B. chariclea_, and I have been unable to distinguish the specimens marked as _boisduvali_, and contained in the Edwards collection, from the specimens designated as _B. chariclea_ in the same collection, so far as the color and maculation of the under sides of these specimens are concerned. Expanse, ♂, 1.50 inch; ♀, 1.75 inch. _Early Stages._--Unknown. This species, originally described from Labrador, is found throughout boreal America and British Columbia. (7) =Brenthis freija=, Thunberg, Plate XV, Fig. 9, ♂; Fig. 10, ♀, _under side_ (The Lapland Fritillary). _Butterfly._--The wings are pale fulvous, the fore wings at the base and the hind wings on the inner half being deeply obscured with fuscous. The markings are quite heavy. The fore wings on the under side are very pale fulvous, yellowish at the tip, mottled with ferruginous. The hind wings are ferruginous on the under side, mottled with yellow. The spots are quite large, consisting of lines and dashes, and a marginal row of small lunulate spots, pale yellow or white, slightly silvered. Expanse, 1.50 inch. This butterfly is circumpolar, being found in Norway, Lapland, northern Russia, and Siberia, through Alaska, British America, and Labrador, occurring also upon the highest peaks of the Rocky Mountains as far south as Colorado. (8) =Brenthis polaris=, Boisduval, Plate XV, Fig. 11, ♂; Fig. 12, ♂, _under side_ (The Polar Fritillary). _Butterfly._--The upper side dull fulvous; the markings on the inner half of the wings are confluent, and lost in the brownish vestiture which obscures this portion of the wing. The outer median area is defined by irregular zigzag spots which flow together. Beyond these the submarginal row of small black spots stands out distinctly upon the lighter ground-color of the wings. The outer margin is marked by black spots at the end of the nervules, on the fore wings somewhat widely separated, on the hind wings narrowly separated by the lighter ground-color. On the under side the wings are fulvous, with a marginal row of white checkerings on both wings. The hind wing is deeply mottled with ferruginous, on which the lighter white markings stand forth very conspicuously. Expanse, ♂, 1.50 inch.; ♀, 1.50-2.00 inches. _Early Stages._--Unknown. This butterfly has been found in Labrador, Greenland, and other portions of arctic America, as far north as latitude 81° 52´. (9) =Brenthis frigga=, Thunberg, Plate XV, Fig. 13, ♂; Fig. 14, ♀, _lower side_ (Frigga).