Jellyfish art by Haeckel (circa 1904)

Jellyfish

The 8th plate from Ernst Haeckel's Kunstformen der Natur (1904), depicting the following jellyfish from top to bottom:
1. Desmonema annasethe (Haeckel), Cnidaria: Scyphozoa
2. Desmonema annasethe
3. Floscula promethea (Haeckel)
4. Chrysaora mediterranea (Peron)