Stammbaum der Pflanzenthiere. 
—ü—ä— 449 — 
Taeniata Lobata 
| 
— — — 
Hydromedusae 
Rhizostomeae 
Semaeostomeae 
461 
Saccata 
STENOSTOMA 
Ctenophora - 
DISCOMEDUSAE 
Trachymedusae 
| 
| 
| Lucernaria | 
| 
N | 
Siphonophora 
| 
| 
EURYSTOMA 
| Calycozoa | 
LEPTOMEDUSAE 
Coralla 
Octocoralla 
Hexacoralla | 
| 
men. — 
Tetracoralla 
| 
Spongiae 
Fibrospongiae 
Chalynthina Leucones Sycones 
| | | Hydroida 
| 
Syeurus 
Calcispongiae 
| * 
Geodina Dyssyeus Cordylophora 
| 
| 
Hexactinella | | | | Hydra 
| | | | 
Ascones 
— — 
| 8 | HYDROIDA 
| Myxospongiae | 
h | Procorallum 
Halisareina 
OLYNTHUS — PR | 
| Hydroida 
| 
—— — — | 
Archispongia Archydra 
| | | 
I DT —H—: — ——— 
Protascus 
CHALYNTHUS 
Gastraea 
