\ 
Got THE CANADIAN ENTOMOLOGIST. 
stripe down its centre, while the yellow occupies the spaces between. On 
the third segment (reckoning the head as first) are two long black fleshy 
horns, and on the twelfth two others of a similar character, but shorter 
and not quite so stout. 
2 
The under side is black with a greenish flesh color between most of 
the segments. 
The next change which comes over this caterpillar is that which trans- 
forms it to a pupa or chrysalis, a most astonishing transformation, when 
thé voracious larva becomes for a time torpid, senseless, and almost 
motionless while preparing for that change when it is to appear in brilliant 
plumage, and gracefully float and flutter through the air, enjoying the 
summer’s sunshine and sipping the nectar of flowers. Fig. 3 shows the 
| | larva as it appears at 
different periods during 
its transition to the 
state of chrysalis. Ata 
it hangs suspended from 
a silken web, in which 
ats hind less 4arelven- 
tangled and which has 
been previously attached 
by the caterpillar to the 
underside of a leaf, or fence rail or some other secure place of retreat, and’ 
here while hanging for about a day the larva contracts its length, and 
increases its bulk, especially on the anterior segments. By and by a rent 
takes place in the skin down the back, and the chrysalis begins to appear, 
and after long and persevering efforts and much wriggling the skin is 
-worked nearly up to the hinder extremity, as shown at b. Nowa difficulty 
presents itself, and a feat is to be performed to imitate which would 
puzzle the most daring acrobat, for without hands or feet to hold on by it 
has to withdraw itself from the remnants of its larva skin, and hang itself 
up by a black protuberance covered with a bunch of hooks, with which 
the chrysalis is furnished. Perilous as this undertaking seems to be, it is 
very seldom indeed that a failure occurs in its accomplishment. A ready 
explanation of the means by which this is done is given at c fig 3. T he 
joints of the abdomen being freely movable, are first stretched against a 
portion of the larva skin, when,'by a sudden jerk backwards, the skin is 
grasped and firmly held while the terminal segments are withdrawn, and 
