Image: haeckel discomedusae 8

Discomedusae:
Desmonema Annasethe (Haeckel) = Cyanea annasethe Haeckel, 1880[1], adult
Desmonema Annasethe (Haeckel) = Cyanea annasethe Haeckel, 1880[2], bell of adult from below, tentacles and most other appendages removed, retaining gonads (top left) and mouth veils (bottom); top right: cut open to show stomach
Floscula Promethea (Haeckel) = Floresca sp.?, juvenile
Chrysaora mediterranea (Peron) = Chrysaora hysoscella (Linnaeus, 1767)[3], adult
- from the book sets: Art Forms in Nature (Kunstformen der Natur) - by Ernst Haeckel (1899-1904).

- من صور كتب: النماذج الفنية في الطبيعة، لـ إرنيست هيكل (نشر ما بين 1899-1904 م.)