ON THE EARLIER STAGES OF COLIAS HYALE. 273 
black, granular, and somewhat shining ; both the head and body 
are beset with a number of short, club-shaped tubercles, which 
are particularly glassy and white; they are shortest and stoutest 
on the head and along the subdorsal surface of the body, except- 
ing those on the first and last segments, where they are longest 
and finest, especially the last pair on the anal segment, which 
are hair-like; those forming the subdorsal series are very short 
and pyriform ; the legs are whitish and semitransparent; the 
claspers are the same colour as the body. 
When quite young it feeds on the upper cuticle of the leaf, 
close to the midrib, and after each meal it returns to the midrib, 
along which it rests in a stright position, with its head further- 
most from the spot where it feeds; it is very sluggish in its 
movements. 
When a few days old it eats through the leaf, completely per- 
forating it. At ten days old, and before moulting, it measures 
one-eighth of an inch long, and is of a pale ochreous tinged 
with green and rather shining. The first one fixed itself for 
moulting on the 18th September, by spinning a layer of silk 
along the midrib, and thereon remained until it moulted for the 
first time, on the 21st September. 
After the first moult the colour is olive-green, with subdorsal 
longitudinal lines of pale whitish green, which is principally 
composed of a series of warts, which also run in oblique short 
lines along the side; there is also a whitish lateral line, 
and a number of tiny pale warts which are sprinkled over 
the body and head, all emitting rather short blackish hairs, 
those on the first segment being the longest and curved for- 
wards; the head is olive-green mottled with dark olive-brown. 
Its first meal, after moulting, consisted of a portion of its cast 
skin. 
On Sept. 25th, when seventeen days old, it measured, while 
at rest, three-sixteenths of an inch; the colour was then of a 
ereyish or smoky-green, with a rather dark medio-dorsal stripe, 
and an indistinct, pale, subdorsal line, chiefly composed of pale 
warts, as previously mentioned; the body is smoother than 
when before described; the hairs are black. It feeds by 
generally beginning at the end of the leaflet. 
The second moult took place on Oct. 38rd. Very soon after, 
and before feeding, it measured oue-sixth of an inch; the head 
very pale green, and the body clover-green, the segments deeply 
wrinkled transversely, the whole body and head being densely 
studded with pale greenish white warts, each having a black 
centre and emitting a black bristle, giving the larva a very dark 
or blackish green appearance; the warts are situated very close 
together, and principally run in longitudinal rows, indicating 
pale subdorsal lines; there is a whitish green lateral stripe; the 
under surface appears rather darker smoky green than the upper 
