32 
PIERIDM. 
VAEIETIE S. 
Specimens of the second or autumnal brood often occur, in 
which the under side of the hind wings is paler, and has only short 
blackish veins, reaching about as far as the discoidal cell. This is 
the var. Napcm, Esp. 116, 5 ; Hld3. 664, 5 ; but is rather an aberrant 
form of one brood than a variety. 
Bryoniae, 0. 1, 2, 151. This is a form of the female in 
which the ground colour of all the wings is greyish yellow, and the 
nervures and spots dilated, producing a very dark appearance. It 
occurs in the Alps as a local variety ; and is not uncommon in 
Switzerland in mountain meadows, &c. PI. VII., 2. 
6. P. Callidice, Esp. 115, 2, 3; Hiib. 408, 9, 551, 2. Expands 
1-50 to 1*75 in. Wings white, dusky at the base. Male with 
small triangular black marks at the tip and along the hind margin 
of the fore wings ; in the centre, at the outer edge of the discoidal 
cell, a narrow oblong black spot. Hind wings white, without 
spots, but showing the pattern of the under side through. The 
female has the hind margin of the fore wings black, with large 
oval or lozenge-shaped white spots, and a large more or less 
quadrate black spot at the outer boundary of the discoidal cell. 
Hind wings white, with a slight yellowish tinge, and powdered 
with black scales ; the hind margin black, with spots similar to 
those on the upper wing. Under side ; — Fore wings much the 
same as on the upper surface, but the black spots have greenish 
scales upon them. Hind wings dark green, with pale yellow 
spaces between the nervures in the shape of arrow-heads. 
PI. VII., 3. 
Times of Appaerance. — July and August. 
Habitat. — This is truly a mountain species, inhabiting the 
Alps of Switzerland, Savoy, the Tyrol, and the Pyrenees. 
Menetries, in his Catalogue of the Imperial Academy of St. 
Petersburg, gives Kamtschatka. It also occurs in the other 
mountainous districts of Northern Asia, extending as far as Cash- 
mere and the Himalayas. It is not at all uncommon in Switzerland 
on the higher passes ; I have taken it at an elevation of 8000 feet, 
in places where the snow is perpetual. 
