I have had a bumper crop of Swallowtail butterfly chrysali. We started growing and hatching them in 1995 and have gotten pretty good at it. Every year we get 5-6 butterflys. This year we had to stop at 11 because the aquarium was getting full and we were running out of anise, which is their preferred food plant. But then, by accident, I found out that they really like parsley which is much easier to keep alive in the aquarium.
Here is a series of photos showing their life-cycle. Click on the first image to get a slide show – the captions are a little hard to read (who thought grey on black was easy to read?) but they fill in some of the details of what you will see.: