File:Haeckel Ascidiae.jpg

Summary
Ascidiacea (commonly known as the ascidians or sea squirts) is a class in the Urochordata subphylum of sac-like marine invertebrate filter feeders. 1. Cynthia melocactus (Haeckel) = Boltenia echinata (Linnaeus, 1767), individual from above 2. Cynthia melocactus (Haeckel) = Boltenia echinata (Linnaeus, 1767), individual from the front 3. Cynthia melocactus (Haeckel) = Boltenia echinata (Linnaeus, 1767), individual in lengthwise section 4. Molgula tubulosa (Forbes) = Eugyra arenosa (Alder & Hancock, 1848), mouth region 5. Fragarium elegans (Giard) = Aplidium elegans (Giard, 1872), colony 6. Polyclinum constellatum (Savigny) = Polyclinum constellatum Savigny, 1816, colony 7. Polyclinum constellatum (Savigny) = Polyclinum constellatum Savigny, 1816, part of colony 8. Synoecum turgens (Phipps) = Synoicum turgens Phipps, 1774, part of colony 9. Botryllus polycyclus (Savigny) = Botryllus schlosseri (Pallas, 1766), part of colony 10. Botryllus rubigo (Giard) = Botryllus schlosseri (Pallas, 1766), part of colony 11. Botryllus Marionis (Giard) = Botryllus schlosseri (Pallas, 1766), part of colony 12. Botryllus helleborus (Giard) = Botryllus schlosseri (Pallas, 1766), part of colony 13. Polycyclus cyaneus (Drasche) = Botryllus schlosseri (Pallas, 1766), colony 14. Botrylloides purpureus (Drasche) = Botrylloides leachii (Savigny, 1816), part of colony Date: 1904 Source: Kunstformen der Natur (1904), plate 100: Antilopina Author: Ernst Haeckel (1834–1919)