It is often difficult to tell the difference between different species of Swallowtail chrysalises unless you raised it from a caterpillar.
Black Swallowtail
Black Swallowtail
Black Swallowtail – Brown and green chrysalises
Gold Rim chrysalis
Gold Rim chrysalis
Gold Rim (Polydamas) Swallowtail chrysalises, green and brown
Zebra Swallowtail chrysalis
Zebra Swallowtail chrysalis
Zebra Swallowtail brown and green chrysalises