Image: haeckel ascidiae

Ascidiae:
Cynthia melocactus (Haeckel) = Boltenia echinata (Linnaeus, 1767), individual from above
Cynthia melocactus (Haeckel) = Boltenia echinata (Linnaeus, 1767), individual from the front
Cynthia melocactus (Haeckel) = Boltenia echinata (Linnaeus, 1767), individual in lengthwise section
Molgula tubulosa (Forbes) = Eugyra arenosa (Alder & Hancock, 1848), mouth region
Fragarium elegans (Giard) = Aplidium elegans (Giard, 1872), colony
Polyclinum constellatum (Savigny) = Polyclinum constellatum Savigny, 1816, colony
Polyclinum constellatum (Savigny) = Polyclinum constellatum Savigny, 1816, part of colony
Synoecum turgens (Phipps) = Synoicum turgens Phipps, 1774, part of colony
Botryllus polycyclus (Savigny) = Botryllus schlosseri (Pallas, 1766), part of colony
Botryllus rubigo (Giard) = Botryllus schlosseri (Pallas, 1766), part of colony
Botryllus Marionis (Giard) = Botryllus schlosseri (Pallas, 1766), part of colony
Botryllus helleborus (Giard) = Botryllus schlosseri (Pallas, 1766), part of colony
Polycyclus cyaneus (Drasche) = Botryllus schlosseri (Pallas, 1766), colony
Botrylloides purpureus (Drasche) = Botrylloides leachii (Savigny, 1816), part of colony
- 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.)