Image: haeckel siphonophorae 77

Siphonophorae:
(center): Praya galea (Haeckel) = Rosacea cymbiformis (delle Chiaje, 1830), colony
(top left): Praya galea (Haeckel) = Rosacea cymbiformis (delle Chiaje, 1830), group of an infertile and a male medusa
(right): Bassia obeliscus (Haeckel) = Bassia bassensis Quoy & Gaimard, 1827, colony
(top center): Bassia obeliscus (Haeckel) = Bassia bassensis Quoy & Gaimard, 1827, upper bell from above
(bottom right): Bassia obeliscus (Haeckel) = Bassia bassensis Quoy & Gaimard, 1827, upper bell inside
(bottom center): Bassia obeliscus (Haeckel) = Bassia bassensis Quoy & Gaimard, 1827, lower bell from below
(top right): Bassia obeliscus (Haeckel) = Bassia bassensis Quoy & Gaimard, 1827, group of an infertile and a male medusa
(bottom left): Bassia obeliscus (Haeckel) = Bassia bassensis Quoy & Gaimard, 1827, female medusa
- 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.)