COLIAS. 
51 
hind margins of all the wings have a very narrow black border 
veined with yellow ; the discoidal black spot is very small. The 
under side of the hind wings is bluish green, with a rose-coloured 
discoidal spot. The female is white, with the tips of the fore 
wings dusky; hind wings without any black border, and on the 
under side of a yellower green than in the male. Fringes of all the 
wings in both sexes rosy. Head, antennae, &c., as in the last 
species. PI. XI., 3. 
Habitat. — The Polar regions, chiefly of North America. I 
have specimens which are said to have been taken in Lapland, and 
have seen others from the same locality. I think, therefore, that 
it is circumpolar, and may properly be placed on the list of 
European Butterflies ; though in Staudinger’s Catalogue C. Aiitlujale 
has a * placed against it, as not occurring in Europe. 
It is perfectly distinct from C. Palceno, and is not an Arctic 
var. of C. Philoclice, Godt. 
3. C. Nastes, B. Ic. 8, 4, 5 ; H.-S. 37, 38, 401-2. 
Expands from 1*50 to 1'75 in. The male has the wings dark 
yellowish green. The fore wings have a black discoidal spot, and 
some lightish spots along the hind margin. Hind wings somewhat 
lighter, with a very indistinct orange discoidal spot. Eringes, 
head and antenna, red. Under side : — Fore wings greenish white, 
dusky green at the tips ; the discoidal spot indistinct. Hind wings 
dark green, with a paler hind margin ; discoidal spot small and 
reddish, with a pearly white centre. The female is rather lighter, 
and with more distinct yellowish spots than the male. Occasionally 
this species is very dusky in appearance, and is sometimes shot 
with violet. PI. XI., 4. . 
Habitat. — The Polar regions. In Europe, the North of 
Lapland. It is chiefly met with in Labrador, and in the American 
Polar regions generally. 
4. C. Werdandi, Zett. Ins. Lap. 908 . — Colias Nastes var. 
Werdandi, Stgr. Cat. p. 5. 
Expands from 1-75 to 2 in. Wings of male greenish white; 
the hind wings deeply tinted with green towards the base. Fore 
