State Agricultural Society. 557 
of my observations began in August, those of L’Admiral, in July 
and September. 
Table Showing the Duration of the Pupa State at Different 
Dates. 
Pupa state began. 
Butterfly came out. 
Pupa state lasted. 
July 
8 . 
19. 
. iii 
days. 
a 
20. 
5. 
. 16 
u 
August 
19. 
26. 
. 7 
a 
« 
21. 
8. 
. 109 
« 
a 
22. 
2 . 
. 11 
a 
« 
29 . 
u 
7 . 
. 9 
a 
September 
4 . 
a 
23 . 
. 19 
a 
<< 
5 . 
28 . 
. 265 
a 
U 
16 . 
1 . 
. 197 
a 
Its change from the pupa to the perfect state is in no respect dif¬ 
ferent from that of the white butterfly, narrated on a preceding 
page. 
From the other white cabbage butterflies this species is distinguished 
by having the fore wings blackish at their tips and with a round 
black spot in the middle slightly beyond the center, the females 
having a smaller second spot between this one and the inner edge; 
and both sexes having a small black spot on the outer edge of the 
hind wings a little beyond the middle; its size also, measured from 
tip to tip of the opened wings, being two inches, but frequently vary¬ 
ing to a quarter of an inch smaller or larger than this, the larger 
ones being females. 
The head is coated over with straight white and black hairs of different lengths, 
the black ones less numerous on the under side. The eyes are large, protuberant and 
hemispberical; in the living specimen grayish green, with four rows of movable 
black spots, the central spot being of a deeper or coal black color; in the dead speci¬ 
men dull brown and without spots. The antenna; are 0.40 long, and composed of 
thirty joints, Which are shorter at each end than in the middle. They are slender 
and thread-like, with the tips enlarged into a knob of an elongated egg-shaped form 
with the larger end outward. Their colors are prettily arranged in new and unrubbed 
specimens, the outer and under sides being white; on the upper side a continuous 
black line; on the inner side a row of long oval dark brown spots, one on each joint 
extending from its base nearly to the tip; these spots separated from the black line 
above by a slender white line, which is widened toward the apex of each joint, and 
there sends downward a transverse band connecting this white line with the white 
under side. The knob is flattened or spoon-shaped and black on the concave inner 
side, white on the lower edge and outer side; the upper part of this side being 
sprinkled with black scales which sometimes form bands of this color j the tips pale 
yellow. The thorax is black and clothed with soft hairs of a white or bluish white 
color. The abdomen is black and covered with white appressed scales, less densn 
